diff --git a/src/objective-c/GRPCClient/GRPCCall+Interceptor.h b/src/objective-c/GRPCClient/GRPCCall+Interceptor.h
index 953846d8c99..4183e0aa20e 100644
--- a/src/objective-c/GRPCClient/GRPCCall+Interceptor.h
+++ b/src/objective-c/GRPCClient/GRPCCall+Interceptor.h
@@ -16,6 +16,8 @@
  *
  */
 
+// The global interceptor feature is experimental and might be modified or removed at any time.
+
 #import "GRPCCall.h"
 
 @protocol GRPCInterceptorFactory;