diff --git a/src/StaticWebAssetsSdk/Tasks/ScopedCss/ApplyCssScopes.cs b/src/StaticWebAssetsSdk/Tasks/ScopedCss/ApplyCssScopes.cs
index cbfff43e67af..f9baf1e83f25 100644
--- a/src/StaticWebAssetsSdk/Tasks/ScopedCss/ApplyCssScopes.cs
+++ b/src/StaticWebAssetsSdk/Tasks/ScopedCss/ApplyCssScopes.cs
@@ -9,6 +9,7 @@
 
 namespace Microsoft.AspNetCore.StaticWebAssets.Tasks;
 
+[MSBuildMultiThreadableTask]
 public class ApplyCssScopes : Task
 {
     [Required]