diff --git a/tests/GraphQL.Client.Serializer.Tests/GraphQL.Client.Serializer.Tests.csproj b/tests/GraphQL.Client.Serializer.Tests/GraphQL.Client.Serializer.Tests.csproj
index 49a25c09..e04fc48f 100644
--- a/tests/GraphQL.Client.Serializer.Tests/GraphQL.Client.Serializer.Tests.csproj
+++ b/tests/GraphQL.Client.Serializer.Tests/GraphQL.Client.Serializer.Tests.csproj
@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="GraphQL.NewtonsoftJson" Version="5.3.2" />
-    <PackageReference Include="GraphQL.SystemTextJson" Version="5.3.2" />
+    <PackageReference Include="GraphQL.SystemTextJson" Version="5.3.3" />
   </ItemGroup>
 
   <ItemGroup>