diff --git a/package.json b/package.json
index 40bd425f..e29e940d 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,8 @@
     "lint": "vue-cli-service lint",
     "fix": "vue-cli-service lint --fix",
     "gen-unicode_emojis": "node build/gen-unicode_emojis",
-    "gen-swagger-type": "dtsgen --out src/types/swagger.d.ts --url https://traptitech.github.io/traQ/swagger.yaml && vue-cli-service lint --fix src/swagger.d.ts"
+    "gen-swagger-type": "dtsgen --out src/types/swagger.d.ts --url https://traptitech.github.io/traQ/swagger.yaml && vue-cli-service lint --fix src/swagger.d.ts",
+    "postinstall": "cat node_modules/vuex/types/vue.d.ts | (rm node_modules/vuex/types/vue.d.ts; sed -e 's/\\$store: Store<any>/\\$store: ExStore/g' -e 's/{ Store }/{ Store, ExStore }/g' > node_modules/vuex/types/vue.d.ts)"
   },
   "dependencies": {
     "dtsgenerator": "^2.0.7",
diff --git a/src/types/shims-vue.d.ts b/src/types/shims-vue.d.ts
index bb45d754..d9f24faa 100644
--- a/src/types/shims-vue.d.ts
+++ b/src/types/shims-vue.d.ts
@@ -1,11 +1,3 @@
-import { ExStore } from 'vuex'
-
-declare module 'vue/types/vue' {
-  interface Vue {
-    $store: ExStore
-  }
-}
-
 declare module '*.vue' {
   import Vue from 'vue'
   export default Vue