diff --git a/Directory.Packages.props b/Directory.Packages.props
index 0ff7bd9..59f6e5d 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -16,8 +16,8 @@
     <PackageVersion Include="Shouldly" Version="4.3.0" />
     <PackageVersion Include="SonarAnalyzer.CSharp" Version="10.16.1.129956" />
     <PackageVersion Include="StyleCop.Analyzers" Version="1.2.0-beta.556" />
-    <PackageVersion Include="System.Collections.Immutable" Version="10.0.0" />
-    <PackageVersion Include="System.Formats.Asn1" Version="10.0.0" />
+    <PackageVersion Include="System.Collections.Immutable" Version="10.0.1" />
+    <PackageVersion Include="System.Formats.Asn1" Version="10.0.1" />
     <PackageVersion Include="Valuify" Version="1.7.2" />
     <PackageVersion Include="xunit" Version="2.9.3" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.5" />
diff --git a/src/Clonify/Clonify.csproj b/src/Clonify/Clonify.csproj
index ca7b71f..8dd8479 100644
--- a/src/Clonify/Clonify.csproj
+++ b/src/Clonify/Clonify.csproj
@@ -17,6 +17,7 @@
     </Compile>
   </ItemGroup>
   <ItemGroup>
+    <PackageReference Include="System.Collections.Immutable" />
     <EmbeddedResource Update="AttributeAnalyzer.Resources.resx">
       <Generator>ResXFileCodeGenerator</Generator>
       <LastGenOutput>AttributeAnalyzer.Resources.Designer.cs</LastGenOutput>