diff --git a/README.md b/README.md
index fbf8c55..92f7ef8 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # preact-css-transition-group
 
+[![Greenkeeper badge](https://badges.greenkeeper.io/developit/preact-css-transition-group.svg)](https://greenkeeper.io/)
+
 A preact fork of [css-transition-group](https://github.com/react-component/css-transition-group), which was originally extracted from the React codebase itself. The overwhelming majority of the code was written by the lovely folks of the React team, so kudos to them!
 
 This module may be of use to you if:
diff --git a/package.json b/package.json
index f9bd2bb..171deec 100644
--- a/package.json
+++ b/package.json
@@ -40,21 +40,21 @@
   "license": "MIT",
   "devDependencies": {
     "babel-core": "^6.6.4",
-    "babel-eslint": "^6.1.2",
-    "babel-loader": "^6.2.4",
+    "babel-eslint": "^7.2.3",
+    "babel-loader": "^7.0.0",
     "babel-plugin-transform-class-properties": "^6.6.0",
     "babel-plugin-transform-es2015-classes": "^6.6.5",
     "babel-plugin-transform-object-rest-spread": "^6.6.4",
     "babel-plugin-transform-react-jsx": "^6.6.5",
     "babel-preset-es2015": "^6.6.0",
-    "babel-preset-es2015-loose": "^7.0.0",
+    "babel-preset-es2015-loose": "^8.0.0",
     "babel-preset-es2015-loose-rollup": "^7.0.0",
     "babel-preset-react": "^6.5.0",
     "babel-preset-stage-0": "^6.5.0",
     "chai": "^3.5.0",
-    "css-loader": "^0.23.1",
+    "css-loader": "^0.28.1",
     "eslint": "^3.2.0",
-    "gzip-size-cli": "^1.0.0",
+    "gzip-size-cli": "^2.0.0",
     "karma": "^1.1.2",
     "karma-chai": "^0.1.0",
     "karma-chai-sinon": "^0.1.5",
@@ -62,22 +62,22 @@
     "karma-mocha-reporter": "^2.0.0",
     "karma-phantomjs-launcher": "^1.0.0",
     "karma-sourcemap-loader": "^0.3.7",
-    "karma-webpack": "^1.7.0",
+    "karma-webpack": "^2.0.3",
     "mkdirp": "^0.5.1",
-    "mocha": "^2.4.5",
-    "npm-run-all": "^2.3.0",
+    "mocha": "^3.3.0",
+    "npm-run-all": "^4.0.2",
     "phantomjs-prebuilt": "^2.1.5",
-    "preact": "^6.0.2",
-    "pretty-bytes-cli": "^1.0.0",
-    "rollup": "^0.34.1",
+    "preact": "^8.1.0",
+    "pretty-bytes-cli": "^2.0.0",
+    "rollup": "^0.41.6",
     "rollup-plugin-babel": "^2.4.0",
-    "rollup-plugin-commonjs": "^3.3.1",
-    "rollup-plugin-node-resolve": "^1.5.0",
-    "sinon": "^1.17.2",
+    "rollup-plugin-commonjs": "^8.0.2",
+    "rollup-plugin-node-resolve": "^3.0.0",
+    "sinon": "^2.2.0",
     "sinon-chai": "^2.8.0",
-    "style-loader": "^0.13.0",
-    "uglify-js": "^2.6.2",
-    "webpack": "^1.12.14"
+    "style-loader": "^0.17.0",
+    "uglify-js": "^3.0.1",
+    "webpack": "^2.5.1"
   },
   "peerDependencies": {
     "preact": "*"