diff --git a/tools/public_api_guard/material/core.md b/tools/public_api_guard/material/core.md
index c32d69cc9765..100ddd1d642d 100644
--- a/tools/public_api_guard/material/core.md
+++ b/tools/public_api_guard/material/core.md
@@ -539,6 +539,7 @@ export type RippleConfig = {
 export interface RippleGlobalOptions {
     animation?: RippleAnimationConfig;
     disabled?: boolean;
+    namespace?: string;
     terminateOnPointerUp?: boolean;
 }