diff --git a/Readme.md b/Readme.md
index aeb5d32..fdcac19 100644
--- a/Readme.md
+++ b/Readme.md
@@ -1,5 +1,7 @@
 # [ukagaka-timer-event-source](https://github.com/Ikagaka/ukagaka-timer-event-source.js)
 
+[![Greenkeeper badge](https://badges.greenkeeper.io/Ikagaka/ukagaka-timer-event-source.js.svg)](https://greenkeeper.io/)
+
 [![npm](https://img.shields.io/npm/v/ukagaka-timer-event-source.svg)](https://www.npmjs.com/package/ukagaka-timer-event-source)
 [![npm license](https://img.shields.io/npm/l/ukagaka-timer-event-source.svg)](https://www.npmjs.com/package/ukagaka-timer-event-source)
 [![npm download total](https://img.shields.io/npm/dt/ukagaka-timer-event-source.svg)](https://www.npmjs.com/package/ukagaka-timer-event-source)
diff --git a/package.json b/package.json
index ee1ea89..dd24517 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
   "dependencies": {},
   "devDependencies": {
     "@types/mocha": "^5.0.0",
-    "@types/node": "^9.3.0",
+    "@types/node": "^10.0.3",
     "@types/power-assert": "^1.4.29",
     "@types/sinon": "^4.1.3",
     "espower-typescript": "^8.1.2",
@@ -38,16 +38,16 @@
     "karma-opera-launcher": "^1.0.0",
     "karma-safari-launcher": "^1.0.0",
     "karma-sourcemap-loader": "^0.3.7",
-    "karma-webpack": "^2.0.9",
+    "karma-webpack": "^3.0.0",
     "mocha": "^5.0.0",
     "nyc": "^11.4.1",
     "power-assert": "^1.4.4",
     "shx": "^0.2.2",
-    "sinon": "^4.1.5",
-    "ts-loader": "^3.2.0",
+    "sinon": "^5.0.3",
+    "ts-loader": "^4.2.0",
     "tslint": "^5.9.1",
     "typescript": "^2.7.2",
-    "webpack": "^3.10.0"
+    "webpack": "^4.6.0"
   },
   "url": "https://github.com/Ikagaka/ukagaka-timer-event-source.js",
   "author": {