diff --git a/csharp/tests/Base64EncoderTests/Base64EncoderTests.csproj b/csharp/tests/Base64EncoderTests/Base64EncoderTests.csproj
index 04596bc..0933a7e 100644
--- a/csharp/tests/Base64EncoderTests/Base64EncoderTests.csproj
+++ b/csharp/tests/Base64EncoderTests/Base64EncoderTests.csproj
@@ -9,7 +9,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
     <PackageReference Include="MSTest.TestAdapter" Version="3.4.3" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.5.0" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.6.2" />
     <PackageReference Include="coverlet.collector" Version="6.0.2" />
   </ItemGroup>
 
diff --git a/csharp/tests/HKDFTests/HKDFTests.csproj b/csharp/tests/HKDFTests/HKDFTests.csproj
index 677c7c5..1b9d562 100644
--- a/csharp/tests/HKDFTests/HKDFTests.csproj
+++ b/csharp/tests/HKDFTests/HKDFTests.csproj
@@ -9,7 +9,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
     <PackageReference Include="MSTest.TestAdapter" Version="3.4.3" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.5.0" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.6.2" />
     <PackageReference Include="coverlet.collector" Version="6.0.2" />
   </ItemGroup>
 
diff --git a/csharp/tests/HMACTests/HMACTests.csproj b/csharp/tests/HMACTests/HMACTests.csproj
index 677c7c5..1b9d562 100644
--- a/csharp/tests/HMACTests/HMACTests.csproj
+++ b/csharp/tests/HMACTests/HMACTests.csproj
@@ -9,7 +9,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
     <PackageReference Include="MSTest.TestAdapter" Version="3.4.3" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.5.0" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.6.2" />
     <PackageReference Include="coverlet.collector" Version="6.0.2" />
   </ItemGroup>