diff --git a/React/Base/RCTWebSocketObserverProtocol.h b/React/Base/RCTWebSocketObserverProtocol.h
index b1aae8bbd74f07..a0328cc6ca5f31 100644
--- a/React/Base/RCTWebSocketObserverProtocol.h
+++ b/React/Base/RCTWebSocketObserverProtocol.h
@@ -19,6 +19,7 @@
 - (instancetype)initWithURL:(NSURL *)url;
 @property (nonatomic, weak) id<RCTWebSocketObserverDelegate> delegate;
 - (void)start;
+- (void)stop;
 @end
 
 #endif