diff --git a/source/TestFramework/nanoFramework.TestFramework.nfproj b/source/TestFramework/nanoFramework.TestFramework.nfproj
index aef9a17..30a7023 100644
--- a/source/TestFramework/nanoFramework.TestFramework.nfproj
+++ b/source/TestFramework/nanoFramework.TestFramework.nfproj
@@ -57,8 +57,8 @@
     <Content Include="packages.lock.json" />
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="mscorlib, Version=1.16.11.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.CoreLibrary.1.16.11\lib\mscorlib.dll</HintPath>
+    <Reference Include="mscorlib, Version=1.17.1.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\..\packages\nanoFramework.CoreLibrary.1.17.1\lib\mscorlib.dll</HintPath>
     </Reference>
   </ItemGroup>
   <Import Project="..\TestFrameworkShared\TestFrameworkShared.projitems" Label="Shared" />
diff --git a/source/TestFramework/packages.config b/source/TestFramework/packages.config
index 63b66bd..a24f447 100644
--- a/source/TestFramework/packages.config
+++ b/source/TestFramework/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="1.16.11" targetFramework="netnano1.0" />
+  <package id="nanoFramework.CoreLibrary" version="1.17.1" targetFramework="netnano1.0" />
   <package id="Nerdbank.GitVersioning" version="3.7.115" developmentDependency="true" targetFramework="netnano1.0" />
 </packages>
\ No newline at end of file
diff --git a/source/TestFramework/packages.lock.json b/source/TestFramework/packages.lock.json
index 1f561cc..7450bf8 100644
--- a/source/TestFramework/packages.lock.json
+++ b/source/TestFramework/packages.lock.json
@@ -4,9 +4,9 @@
     ".NETnanoFramework,Version=v1.0": {
       "nanoFramework.CoreLibrary": {
         "type": "Direct",
-        "requested": "[1.16.11, 1.16.11]",
-        "resolved": "1.16.11",
-        "contentHash": "2XW+Zn0lQ+lOcxDbB1l2ga2rNoj9Jv2IeJwXE4ka1r+swmxn5N/otlMJVEXJgK8trUeD/E8T7+J7dXjU8UReHw=="
+        "requested": "[1.17.1, 1.17.1]",
+        "resolved": "1.17.1",
+        "contentHash": "T/iPvP8AeZs/5UeZgVa2cZVbl79ioeRyBJLzx4qvKbE9RE+984AR5WPY4tjGIdXugs1AFUYYnydvuGCpy+P1ww=="
       },
       "Nerdbank.GitVersioning": {
         "type": "Direct",
diff --git a/source/UnitTestLauncher/nanoFramework.UnitTestLauncher.nfproj b/source/UnitTestLauncher/nanoFramework.UnitTestLauncher.nfproj
index 658bb4f..6e657cc 100644
--- a/source/UnitTestLauncher/nanoFramework.UnitTestLauncher.nfproj
+++ b/source/UnitTestLauncher/nanoFramework.UnitTestLauncher.nfproj
@@ -40,8 +40,8 @@
     <None Include="key.snk" />
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="mscorlib, Version=1.16.11.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.CoreLibrary.1.16.11\lib\mscorlib.dll</HintPath>
+    <Reference Include="mscorlib, Version=1.17.1.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\..\packages\nanoFramework.CoreLibrary.1.17.1\lib\mscorlib.dll</HintPath>
     </Reference>
   </ItemGroup>
   <Import Project="$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets" Condition="Exists('$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets')" />
diff --git a/source/UnitTestLauncher/packages.config b/source/UnitTestLauncher/packages.config
index 983dff0..e084bb1 100644
--- a/source/UnitTestLauncher/packages.config
+++ b/source/UnitTestLauncher/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="1.16.11" targetFramework="netnano1.0" />
-</packages>
\ No newline at end of file
+  <package id="nanoFramework.CoreLibrary" version="1.17.1" targetFramework="netnano1.0" />
+</packages>
diff --git a/source/UnitTestLauncher/packages.lock.json b/source/UnitTestLauncher/packages.lock.json
index f8c5220..8884966 100644
--- a/source/UnitTestLauncher/packages.lock.json
+++ b/source/UnitTestLauncher/packages.lock.json
@@ -4,9 +4,9 @@
     ".NETnanoFramework,Version=v1.0": {
       "nanoFramework.CoreLibrary": {
         "type": "Direct",
-        "requested": "[1.16.11, 1.16.11]",
-        "resolved": "1.16.11",
-        "contentHash": "2XW+Zn0lQ+lOcxDbB1l2ga2rNoj9Jv2IeJwXE4ka1r+swmxn5N/otlMJVEXJgK8trUeD/E8T7+J7dXjU8UReHw=="
+        "requested": "[1.17.1, 1.17.1]",
+        "resolved": "1.17.1",
+        "contentHash": "T/iPvP8AeZs/5UeZgVa2cZVbl79ioeRyBJLzx4qvKbE9RE+984AR5WPY4tjGIdXugs1AFUYYnydvuGCpy+P1ww=="
       }
     }
   }