diff --git a/spec/index.bs b/spec/index.bs
index 4655577668..b6c4725dab 100644
--- a/spec/index.bs
+++ b/spec/index.bs
@@ -2640,6 +2640,7 @@ enum GPUFeatureName {
     "bgra8unorm-storage",
     "float32-filterable",
     "clip-distances",
+    "dual-source-blending",
 };
 </script>