diff --git a/Solutions/Corvus.Json.PropertyBag.Benchmarks/Corvus.Json.PropertyBag.Benchmarks.csproj b/Solutions/Corvus.Json.PropertyBag.Benchmarks/Corvus.Json.PropertyBag.Benchmarks.csproj
index d3a585b..c792c32 100644
--- a/Solutions/Corvus.Json.PropertyBag.Benchmarks/Corvus.Json.PropertyBag.Benchmarks.csproj
+++ b/Solutions/Corvus.Json.PropertyBag.Benchmarks/Corvus.Json.PropertyBag.Benchmarks.csproj
@@ -33,7 +33,7 @@
 
   <ItemGroup>
     <PackageReference Include="BenchmarkDotNet" Version="0.14.0" />
-    <PackageReference Include="Corvus.Json.ExtendedTypes" Version="4.2.3" />
+    <PackageReference Include="Corvus.Json.ExtendedTypes" Version="5.1.0" />
     <PackageReference Include="Corvus.Json.SourceGenerator" Version="4.2.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>