diff --git a/contributing/code/standards.rst b/contributing/code/standards.rst
index 40ca8c4981d..a11ac1d34a6 100644
--- a/contributing/code/standards.rst
+++ b/contributing/code/standards.rst
@@ -172,6 +172,10 @@ Documentation
 
 * Add PHPDoc blocks for all classes, methods, and functions;
 
+* Group annotations together so that annotations of the same type immediately
+  follow each other, and annotations of a different type are separated by a
+  single blank line;
+
 * Omit the ``@return`` tag if the method does not return anything;
 
 * The ``@package`` and ``@subpackage`` annotations are not used.