diff --git a/GraphEngine.Tests/GraphEngine.Tests.csproj b/GraphEngine.Tests/GraphEngine.Tests.csproj
index c2ab56e..dddd066 100644
--- a/GraphEngine.Tests/GraphEngine.Tests.csproj
+++ b/GraphEngine.Tests/GraphEngine.Tests.csproj
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="dotNetRDF" Version="3.1.1" />
+    <PackageReference Include="dotNetRDF" Version="3.2.1" />
     <PackageReference Include="ExpressionTreeToolkit.Core" Version="0.4.0" />
     <PackageReference Include="FluentAssertions" Version="6.12.0" />
     <PackageReference Include="coverlet.collector" Version="6.0.2">
diff --git a/GraphEngine/GraphEngine.csproj b/GraphEngine/GraphEngine.csproj
index f3ed5d4..c88b99d 100644
--- a/GraphEngine/GraphEngine.csproj
+++ b/GraphEngine/GraphEngine.csproj
@@ -30,7 +30,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="dotNetRDF" Version="3.1.1" />
+    <PackageReference Include="dotNetRDF" Version="3.2.1" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>