diff --git a/react-native/index.d.ts b/react-native/index.d.ts
index 92b04ef40c..d63a339d0a 100644
--- a/react-native/index.d.ts
+++ b/react-native/index.d.ts
@@ -2106,6 +2106,11 @@ declare module "react" {
          */
         goForward: () => void
 
+	/**
+	 * Post a message to the WebView in the form of a string.
+	 */
+	postMessage: (message: string) => void
+
         /**
          * Reloads the current page.
          */