diff --git a/src/Foundatio.Xunit/Foundatio.Xunit.csproj b/src/Foundatio.Xunit/Foundatio.Xunit.csproj
index 820131d57..e52dfd41a 100644
--- a/src/Foundatio.Xunit/Foundatio.Xunit.csproj
+++ b/src/Foundatio.Xunit/Foundatio.Xunit.csproj
@@ -7,7 +7,7 @@
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   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="System.Collections.Immutable" Version="8.0" />
+    <PackageReference Include="System.Collections.Immutable" Version="9.0.1" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="8.0" />
     <PackageReference Include="xunit" Version="2.9.3" />
   </ItemGroup>