diff --git a/typings/react-native-code-push.d.ts b/typings/react-native-code-push.d.ts
index 4b61a8c..dc24e2a 100644
--- a/typings/react-native-code-push.d.ts
+++ b/typings/react-native-code-push.d.ts
@@ -230,7 +230,7 @@ declare namespace CodePush {
      * 
      * @param handleBinaryVersionMismatchCallback An optional callback for handling target binary version mismatch
      */
-    function checkForUpdate(deploymentKey?: string, handleBinaryVersionMismatchCallback?: HandleBinaryVersionMismatchCallback): Promise<RemotePackage>;
+    function checkForUpdate(deploymentKey?: string, handleBinaryVersionMismatchCallback?: HandleBinaryVersionMismatchCallback): Promise<RemotePackage | null>;
 
     /**
      * Retrieves the metadata for an installed update (e.g. description, mandatory).