diff --git a/types/index.d.ts b/types/index.d.ts
index a3612228a..82593d048 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -98,6 +98,7 @@ export interface StoreOptions<S> {
   modules?: ModuleTree<S>;
   plugins?: Plugin<S>[];
   strict?: boolean;
+  devtools?: boolean;
 }
 
 export type ActionHandler<S, R> = (this: Store<R>, injectee: ActionContext<S, R>, payload?: any) => any;
diff --git a/types/test/index.ts b/types/test/index.ts
index c417c8bb7..288a5737f 100644
--- a/types/test/index.ts
+++ b/types/test/index.ts
@@ -98,7 +98,8 @@ namespace RootModule {
     mutations: {
       bar (state, payload) {}
     },
-    strict: true
+    strict: true,
+    devtools: true
   });
 }