diff --git a/package.json b/package.json
index 394d2d8..a1b5e31 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "source-map-loader": "0.1.5",
     "ts-loader": "^0.8.2",
     "tslint": "^3.14.0",
-    "typescript": "^1.8.10",
+    "typescript": "2.0.3",
     "typings": "1.3.2",
     "webpack": "^1.13.1"
   }
diff --git a/src/components/counter.tsx b/src/components/counter.tsx
index a22af36..94c81f8 100644
--- a/src/components/counter.tsx
+++ b/src/components/counter.tsx
@@ -29,7 +29,7 @@ const mapDispatchToProps = (dispatch: redux.Dispatch<Store.All>): ConnectedDispa
 
 class CounterComponent extends React.Component<ConnectedState & ConnectedDispatch & OwnProps, {}> {
 
-  _onClickIncrement = (e: Event) => {
+  _onClickIncrement = (e: React.SyntheticEvent) => {
     e.preventDefault()
     this.props.increment(1)
   }