diff --git a/package.json b/package.json
index cf6de0a..9e2bdf4 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
     "eslint-plugin-promise": "^4.1.1",
     "eslint-plugin-standard": "^4.0.0",
     "jest": "^24.8.0",
-    "rollup-plugin-typescript2": "^0.21.0",
+    "rollup-plugin-typescript2": "^0.22.1",
     "ts-jest": "^24.0.2",
     "typescript": "^3.4.5",
     "vuepress": "^1.0.0"