diff --git a/DynamoDbEncryption/runtimes/net/DynamoDbEncryption.csproj b/DynamoDbEncryption/runtimes/net/DynamoDbEncryption.csproj
index 337e8edd8..f546abf93 100644
--- a/DynamoDbEncryption/runtimes/net/DynamoDbEncryption.csproj
+++ b/DynamoDbEncryption/runtimes/net/DynamoDbEncryption.csproj
@@ -64,9 +64,9 @@
       System.Collections.Immutable can be removed once dafny.msbuild is updated with
       https://github.com/dafny-lang/dafny.msbuild/pull/10 and versioned
     -->
-    <PackageReference Include="System.Collections.Immutable" Version="1.7.0" />
+    <PackageReference Include="System.Collections.Immutable" Version="10.0.9" />
     <!-- Work around for dafny-lang/dafny/issues/1951; remove once resolved -->
-    <PackageReference Include="System.ValueTuple" Version="4.6.1" />
+    <PackageReference Include="System.ValueTuple" Version="4.6.2" />
 
     <Compile Include="Extern/**/*.cs"/>
     <Compile Include="Generated/**/*.cs"/>
diff --git a/Examples/runtimes/net/Examples.csproj b/Examples/runtimes/net/Examples.csproj
index 98be03fbf..6f3c1133d 100644
--- a/Examples/runtimes/net/Examples.csproj
+++ b/Examples/runtimes/net/Examples.csproj
@@ -11,9 +11,9 @@
   <ItemGroup>
     <ProjectReference Include="../../../DynamoDbEncryption/runtimes/net/DynamoDbEncryption.csproj" />
     <PackageReference Include="AWSSDK.SecurityToken" Version="4.*"/>
-    <PackageReference Include="xunit" Version="2.4.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.0.2" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
   </ItemGroup>
 
 </Project>