diff --git a/configuration/env_var_processors.rst b/configuration/env_var_processors.rst
index 83eafef37aa..74949c5c2a0 100644
--- a/configuration/env_var_processors.rst
+++ b/configuration/env_var_processors.rst
@@ -163,7 +163,9 @@ Symfony provides the following env var processors:
                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                 xmlns:security="http://symfony.com/schema/dic/security"
                 xsi:schemaLocation="http://symfony.com/schema/dic/services
-                    https://symfony.com/schema/dic/services/services-1.0.xsd">
+                    https://symfony.com/schema/dic/services/services-1.0.xsd
+                    http://symfony.com/schema/dic/security
+                    https://symfony.com/schema/dic/security/security-1.0.xsd">
 
                 <parameters>
                     <parameter key="env(HEALTH_CHECK_METHOD)">Symfony\Component\HttpFoundation\Request::METHOD_HEAD</parameter>
diff --git a/reference/configuration/security.rst b/reference/configuration/security.rst
index 92af5e21bd8..1e267437ab9 100644
--- a/reference/configuration/security.rst
+++ b/reference/configuration/security.rst
@@ -157,7 +157,9 @@ encoding algorithm. Also, each algorithm defines different config options:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -329,7 +331,9 @@ application:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -652,7 +656,9 @@ multiple firewalls, the "context" could actually be shared:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <firewall name="somename" context="my_context">
diff --git a/security.rst b/security.rst
index 8fbffdf6778..6eb068cb969 100644
--- a/security.rst
+++ b/security.rst
@@ -137,7 +137,9 @@ command will pre-configure this for you:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -253,7 +255,9 @@ important section is ``firewalls``:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <firewall name="dev"
@@ -455,7 +459,9 @@ start with ``/admin``, you can:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -531,7 +537,9 @@ the list and stops when it finds the first match:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -681,7 +689,7 @@ like this:
 
 * ``IS_ANONYMOUS``: *Only* anonymous users are matched by this attribute.
 
-* ``IS_REMEMBERED``: *Only* users authenticated using the 
+* ``IS_REMEMBERED``: *Only* users authenticated using the
   :doc:`remember me functionality </security/remember_me>`, (i.e. a
   remember-me cookie).
 
@@ -806,7 +814,9 @@ To enable logging out, activate the  ``logout`` config parameter under your fire
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -923,7 +933,9 @@ rules by creating a role hierarchy:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
diff --git a/security/access_control.rst b/security/access_control.rst
index ae2bee3bf51..edc163e5135 100644
--- a/security/access_control.rst
+++ b/security/access_control.rst
@@ -53,7 +53,9 @@ Take the following ``access_control`` entries as an example:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -213,7 +215,9 @@ pattern so that it is only accessible by requests from the local server itself:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -300,7 +304,9 @@ key:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -376,7 +382,9 @@ access those URLs via a specific port. This could be useful for example for
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -427,7 +435,9 @@ the user will be redirected to ``https``:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
diff --git a/security/auth_providers.rst b/security/auth_providers.rst
index 69fd0abaaa2..349f16a219a 100644
--- a/security/auth_providers.rst
+++ b/security/auth_providers.rst
@@ -55,7 +55,9 @@ To support HTTP Basic authentication, add the ``http_basic`` key to your firewal
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -121,7 +123,9 @@ Enable the x509 authentication for a particular firewall in the security configu
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -197,7 +201,12 @@ corresponding firewall in your security configuration:
         <!-- config/packages/security.xml -->
         <?xml version="1.0" ?>
         <srv:container xmlns="http://symfony.com/schema/dic/security"
-            xmlns:srv="http://symfony.com/schema/dic/services">
+            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+            xmlns:srv="http://symfony.com/schema/dic/services"
+            xsi:schemaLocation="http://symfony.com/schema/dic/services
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <firewall name="main">
diff --git a/security/custom_authentication_provider.rst b/security/custom_authentication_provider.rst
index d0db9c91168..dfbdc4938c1 100644
--- a/security/custom_authentication_provider.rst
+++ b/security/custom_authentication_provider.rst
@@ -488,7 +488,9 @@ You are finished! You can now define parts of your app as under WSSE protection.
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -604,7 +606,9 @@ set to any desirable value per firewall.
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
diff --git a/security/firewall_restriction.rst b/security/firewall_restriction.rst
index 0ce0c2e3ff5..ee0950083bc 100644
--- a/security/firewall_restriction.rst
+++ b/security/firewall_restriction.rst
@@ -49,7 +49,9 @@ if the request path matches the configured ``pattern``.
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -106,7 +108,9 @@ only initialize if the host from the request matches against the configuration.
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -164,7 +168,9 @@ the provided HTTP methods.
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -220,7 +226,9 @@ If the above options don't fit your needs you can configure any service implemen
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
diff --git a/security/force_https.rst b/security/force_https.rst
index 797446ce4b9..9492e0fece0 100644
--- a/security/force_https.rst
+++ b/security/force_https.rst
@@ -36,7 +36,9 @@ access control:
                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                 xmlns:srv="http://symfony.com/schema/dic/services"
                 xsi:schemaLocation="http://symfony.com/schema/dic/services
-                    https://symfony.com/schema/dic/services/services-1.0.xsd">
+                    https://symfony.com/schema/dic/services/services-1.0.xsd
+                    http://symfony.com/schema/dic/security
+                    https://symfony.com/schema/dic/security/security-1.0.xsd">
 
                 <config>
                     <!-- ... -->
diff --git a/security/form_login.rst b/security/form_login.rst
index f7763ce8094..24039da809e 100644
--- a/security/form_login.rst
+++ b/security/form_login.rst
@@ -41,7 +41,9 @@ First, enable ``form_login`` under your firewall:
             xmlns:srv="http://symfony.com/schema/dic/services"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <firewall name="main">
@@ -279,7 +281,9 @@ security component:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -361,7 +365,9 @@ After this, you have protected your login form against CSRF attacks.
                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                 xmlns:srv="http://symfony.com/schema/dic/services"
                 xsi:schemaLocation="http://symfony.com/schema/dic/services
-                    https://symfony.com/schema/dic/services/services-1.0.xsd">
+                    https://symfony.com/schema/dic/services/services-1.0.xsd
+                    http://symfony.com/schema/dic/security
+                    https://symfony.com/schema/dic/security/security-1.0.xsd">
 
                 <config>
                     <!-- ... -->
@@ -435,7 +441,9 @@ a relative/absolute URL or a Symfony route name:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -492,7 +500,9 @@ previously requested URL and always redirect to the default page:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -580,7 +590,9 @@ parameter is included in the request, you may use the value of the
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -646,7 +658,9 @@ option to define a new target via a relative/absolute URL or a Symfony route nam
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -721,7 +735,9 @@ redirects can be customized using the  ``target_path_parameter`` and
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
diff --git a/security/form_login_setup.rst b/security/form_login_setup.rst
index d8c27871cce..0f543360930 100644
--- a/security/form_login_setup.rst
+++ b/security/form_login_setup.rst
@@ -100,7 +100,9 @@ Edit the ``security.yaml`` file in order to allow access for anyone to the
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <rule path="^/login$" role="IS_AUTHENTICATED_ANONYMOUSLY"/>
@@ -291,7 +293,9 @@ a traditional HTML form that submits to ``/login``:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
diff --git a/security/guard_authentication.rst b/security/guard_authentication.rst
index 9e40e19a081..71859870d11 100644
--- a/security/guard_authentication.rst
+++ b/security/guard_authentication.rst
@@ -204,7 +204,9 @@ Finally, configure your ``firewalls`` key in ``security.yaml`` to use this authe
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
             <config>
                 <!-- ... -->
 
diff --git a/security/impersonating_user.rst b/security/impersonating_user.rst
index 3fc25ba406e..8ab25dab9a6 100644
--- a/security/impersonating_user.rst
+++ b/security/impersonating_user.rst
@@ -38,7 +38,9 @@ listener:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -165,7 +167,9 @@ also adjust the query parameter name via the ``parameter`` setting:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
             <config>
                 <!-- ... -->
 
@@ -198,7 +202,7 @@ Limiting User Switching
 
 If you need more control over user switching, you can use a security voter. First,
 configure ``switch_user`` to check for some new, custom attribute. This can be
-anything, but *cannot* start with ``ROLE_`` (to enforce that only your voter will 
+anything, but *cannot* start with ``ROLE_`` (to enforce that only your voter will
 be called):
 
 .. configuration-block::
@@ -222,7 +226,9 @@ be called):
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
             <config>
                 <!-- ... -->
 
diff --git a/security/json_login_setup.rst b/security/json_login_setup.rst
index 060821704e2..44ffa5d02e9 100644
--- a/security/json_login_setup.rst
+++ b/security/json_login_setup.rst
@@ -29,7 +29,9 @@ First, enable the JSON login under your firewall:
             xmlns:srv="http://symfony.com/schema/dic/services"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <firewall name="main">
@@ -177,7 +179,9 @@ The security configuration should be:
             xmlns:srv="http://symfony.com/schema/dic/services"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <firewall name="main">
diff --git a/security/ldap.rst b/security/ldap.rst
index 0750fdc25ec..6a956cc00f4 100644
--- a/security/ldap.rst
+++ b/security/ldap.rst
@@ -159,7 +159,9 @@ use the ``ldap`` user provider.
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <provider name="my_ldap">
@@ -379,7 +381,9 @@ Configuration example for form login
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <firewall name="main">
@@ -432,7 +436,9 @@ Configuration example for HTTP Basic
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -492,7 +498,9 @@ Configuration example for form login and query_string
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <firewall name="main">
diff --git a/security/multiple_guard_authenticators.rst b/security/multiple_guard_authenticators.rst
index f9145e1d897..d3ef59a2494 100644
--- a/security/multiple_guard_authenticators.rst
+++ b/security/multiple_guard_authenticators.rst
@@ -42,7 +42,9 @@ This is how your security configuration can look in action:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -120,7 +122,9 @@ the solution is to split the configuration into two separate firewalls:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
diff --git a/security/named_encoders.rst b/security/named_encoders.rst
index aad4d740fb1..cacf302d5d9 100644
--- a/security/named_encoders.rst
+++ b/security/named_encoders.rst
@@ -27,7 +27,9 @@ to apply to all instances of a specific class:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd"
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd"
         >
             <config>
                 <!-- ... -->
@@ -81,7 +83,9 @@ be done with named encoders:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd"
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd"
         >
 
             <config>
@@ -158,7 +162,9 @@ you must register a service for it in order to use it as a named encoder:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd"
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd"
         >
 
             <config>
diff --git a/security/password_migration.rst b/security/password_migration.rst
index 0f403a51b3a..c30acf70a9e 100644
--- a/security/password_migration.rst
+++ b/security/password_migration.rst
@@ -50,6 +50,8 @@ on the new encoder to point to the old, legacy encoder(s):
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:security="http://symfony.com/schema/dic/security"
             xsi:schemaLocation="http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd
+                http://symfony.com/schema/dic/security
                 https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <security:config>
diff --git a/security/remember_me.rst b/security/remember_me.rst
index a001e0367ef..e78aba9b977 100644
--- a/security/remember_me.rst
+++ b/security/remember_me.rst
@@ -38,7 +38,9 @@ the session lasts using a cookie with the ``remember_me`` firewall option:
             xmlns:srv="http://symfony.com/schema/dic/services"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -291,7 +293,9 @@ service you just created:
             xmlns:srv="http://symfony.com/schema/dic/services"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
diff --git a/security/user_checkers.rst b/security/user_checkers.rst
index b0ebfeef56a..ca8ecfbab83 100644
--- a/security/user_checkers.rst
+++ b/security/user_checkers.rst
@@ -85,7 +85,9 @@ is the service id of your user checker:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
diff --git a/security/user_provider.rst b/security/user_provider.rst
index 04a587b2529..b64f689ac48 100644
--- a/security/user_provider.rst
+++ b/security/user_provider.rst
@@ -173,7 +173,9 @@ To finish this, remove the ``property`` key from the user provider in
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd">
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
 
             <config>
                 <!-- ... -->
@@ -238,7 +240,9 @@ users will encode their passwords:
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:srv="http://symfony.com/schema/dic/services"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd"
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd"
         >
             <config>
                 <!-- ... -->
diff --git a/security/voters.rst b/security/voters.rst
index ef7f8519f7e..7afd507e3ea 100644
--- a/security/voters.rst
+++ b/security/voters.rst
@@ -304,7 +304,9 @@ security configuration:
             xmlns:srv="http://symfony.com/schema/dic/services"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
-                https://symfony.com/schema/dic/services/services-1.0.xsd"
+                https://symfony.com/schema/dic/services/services-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd"
         >
 
             <config>
diff --git a/testing/http_authentication.rst b/testing/http_authentication.rst
index f96937ed2be..b7f09dbac30 100644
--- a/testing/http_authentication.rst
+++ b/testing/http_authentication.rst
@@ -43,6 +43,15 @@ firewall, but only in the configuration file used by tests:
     .. code-block:: xml
 
         <!-- config/packages/test/security.xml -->
+        <?xml version="1.0" encoding="UTF-8"?>
+        <container xmlns="http://symfony.com/schema/dic/services"
+            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+            xmlns:security="http://symfony.com/schema/dic/security"
+            xsi:schemaLocation="http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd
+                http://symfony.com/schema/dic/security
+                https://symfony.com/schema/dic/security/security-1.0.xsd">
+
         <security:config>
             <!-- replace 'main' by the name of your own firewall -->
             <security:firewall name="main">