diff --git a/Libraries/src/Amazon.Lambda.KinesisEvents/Amazon.Lambda.KinesisEvents.csproj b/Libraries/src/Amazon.Lambda.KinesisEvents/Amazon.Lambda.KinesisEvents.csproj
index 0bd6ea100..37303f1e1 100644
--- a/Libraries/src/Amazon.Lambda.KinesisEvents/Amazon.Lambda.KinesisEvents.csproj
+++ b/Libraries/src/Amazon.Lambda.KinesisEvents/Amazon.Lambda.KinesisEvents.csproj
@@ -21,6 +21,7 @@
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' != 'netstandard2.0' ">
+    <PackageReference Include="AWSSDK.Core" Version="4.0.3.3" />
     <Compile Include="Converters\DictionaryLongToStringJsonConverter.cs" />
   </ItemGroup>
 
diff --git a/Libraries/test/EventsTests.NET6/EventsTests.NET6.csproj b/Libraries/test/EventsTests.NET6/EventsTests.NET6.csproj
index bd4f561f0..1cea00e58 100644
--- a/Libraries/test/EventsTests.NET6/EventsTests.NET6.csproj
+++ b/Libraries/test/EventsTests.NET6/EventsTests.NET6.csproj
@@ -62,7 +62,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="xunit" Version="2.4.1" />
-    <PackageReference Include="AWSSDK.Core" Version="4.0.0.0" />
+    <PackageReference Include="AWSSDK.Core" Version="4.0.3.3" />
   </ItemGroup>
 
   <ItemGroup>