diff --git a/react-select/react-select-tests.ts b/react-select/react-select-tests.ts
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/react-select/react-select.d.ts b/react-select/react-select.d.ts
index 387b4f832d..ee365fe9ba 100644
--- a/react-select/react-select.d.ts
+++ b/react-select/react-select.d.ts
@@ -43,11 +43,11 @@ declare module "react-select" {
         name? : string;
         newOptionCreator? : ()=>Option;
         noResultsText? : string;
-        onBlur? : (event)=>void;
-        onChange? : (newValue)=>void;
-        onFocus? : (event)=>void;
-        onInputChange? : (inputValue)=>void;
-        onOptionLabelClick? : (value, event)=>void;
+        onBlur? : (event : Event)=>void;
+        onChange? : (newValue : string)=>void;
+        onFocus? : (event : Event)=>void;
+        onInputChange? : (inputValue : string)=>void;
+        onOptionLabelClick? : (value : string, event : Event)=>void;
         optionRenderer? : ()=>void;
         options? : Array<Option>;
         placeholder? : string;