diff --git a/src/Bicep.Types.UnitTests/Bicep.Types.UnitTests.csproj b/src/Bicep.Types.UnitTests/Bicep.Types.UnitTests.csproj
index 723b9c86..dc45ca95 100644
--- a/src/Bicep.Types.UnitTests/Bicep.Types.UnitTests.csproj
+++ b/src/Bicep.Types.UnitTests/Bicep.Types.UnitTests.csproj
@@ -14,7 +14,7 @@
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     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.3" />
     <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.0.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
     <PackageReference Include="coverlet.collector" Version="6.0.0" />
   </ItemGroup>
 
diff --git a/src/Bicep.Types.UnitTests/packages.lock.json b/src/Bicep.Types.UnitTests/packages.lock.json
index 821a9317..2a1ed951 100644
--- a/src/Bicep.Types.UnitTests/packages.lock.json
+++ b/src/Bicep.Types.UnitTests/packages.lock.json
@@ -45,9 +45,9 @@
       },
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-        "resolved": "3.0.2",
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+        "requested": "[3.1.1, )",
+        "resolved": "3.1.1",
+        "contentHash": "3rjkGxciNHHmPW8cl1/QVIYjOpfptjmAH5JrLBw+dnMTYDoweg3I579N7OIbar3Zd3q9dfWFrCy2LEV/AmPn3A=="
       },
       "Nerdbank.GitVersioning": {
         "type": "Direct",