diff --git a/src/Selkie.DefCon.One.DotNetCore.Tests/Selkie.DefCon.One.DotNetCore.Tests.csproj b/src/Selkie.DefCon.One.DotNetCore.Tests/Selkie.DefCon.One.DotNetCore.Tests.csproj
index d8feffe..39e1dd1 100644
--- a/src/Selkie.DefCon.One.DotNetCore.Tests/Selkie.DefCon.One.DotNetCore.Tests.csproj
+++ b/src/Selkie.DefCon.One.DotNetCore.Tests/Selkie.DefCon.One.DotNetCore.Tests.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Autofac" Version="9.0.0" />
+    <PackageReference Include="Autofac" Version="9.1.0" />
     <PackageReference Include="AutofacSerilogIntegration" Version="5.0.0" />
     <PackageReference Include="AutoFixture" Version="4.18.1" />
     <PackageReference Include="AutoFixture.AutoNSubstitute" Version="4.18.1" />
diff --git a/src/Selkie.DefCon.One/Selkie.DefCon.One.csproj b/src/Selkie.DefCon.One/Selkie.DefCon.One.csproj
index 11745af..9a8477f 100644
--- a/src/Selkie.DefCon.One/Selkie.DefCon.One.csproj
+++ b/src/Selkie.DefCon.One/Selkie.DefCon.One.csproj
@@ -20,7 +20,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Autofac" Version="9.0.0" />
+    <PackageReference Include="Autofac" Version="9.1.0" />
     <PackageReference Include="AutoFixture" Version="4.18.1" />
     <PackageReference Include="AutoFixture.AutoNSubstitute" Version="4.18.1" />
     <PackageReference Include="JetBrains.Annotations" Version="2025.2.4" />