diff --git a/src/types.ts b/src/types.ts
index 9482a552..f68a3b08 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -123,7 +123,7 @@ export type AsyncStorageStatic = {
    * See https://react-native-async-storage.github.io/async-storage/docs/api#multiget
    */
   multiGet: (
-    keys: string[],
+    keys: readonly string[],
     callback?: MultiGetCallback
   ) => Promise<readonly KeyValuePair[]>;