diff --git a/csharp/tests/Base64EncoderTests/Base64EncoderTests.csproj b/csharp/tests/Base64EncoderTests/Base64EncoderTests.csproj
index 04596bc..cec9cf2 100644
--- a/csharp/tests/Base64EncoderTests/Base64EncoderTests.csproj
+++ b/csharp/tests/Base64EncoderTests/Base64EncoderTests.csproj
@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.4.3" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.6.2" />
     <PackageReference Include="MSTest.TestFramework" Version="3.5.0" />
     <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..67c98e9 100644
--- a/csharp/tests/HKDFTests/HKDFTests.csproj
+++ b/csharp/tests/HKDFTests/HKDFTests.csproj
@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.4.3" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.6.2" />
     <PackageReference Include="MSTest.TestFramework" Version="3.5.0" />
     <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..67c98e9 100644
--- a/csharp/tests/HMACTests/HMACTests.csproj
+++ b/csharp/tests/HMACTests/HMACTests.csproj
@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.4.3" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.6.2" />
     <PackageReference Include="MSTest.TestFramework" Version="3.5.0" />
     <PackageReference Include="coverlet.collector" Version="6.0.2" />
   </ItemGroup>