diff --git a/apinotes/Metal.apinotes b/apinotes/Metal.apinotes
index d68d5b60a3573..15d09edc83304 100644
--- a/apinotes/Metal.apinotes
+++ b/apinotes/Metal.apinotes
@@ -10,3 +10,5 @@ Tags:
 Enumerators:
 - Name: MTLTextureUsageUnknown
   SwiftName: unknown
+- Name: MTLStorageModeShared
+  SwiftName: shared