diff --git a/.travis.yml b/.travis.yml
index 22dabee..ee7fd70 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,7 +23,7 @@ after_script:
     # Authenticate NPM
     echo "//registry.npmjs.org/:_authToken=\${NPM_TOKEN}" > .npmrc
     # Set version to commit SHA
-    npm --no-git-tag-version version $(node -p -e "require('./package.json').version")-${TRAVIS_COMMIT:0:5}
+    npm --no-git-tag-version version $($(npm bin)/json -f package.json version)-prerelease.$(date +%s)
     npm publish
     # Publish to gh-pages as most recent committer
     git config --global user.email $(git log --pretty=format:"%ce" -n1)
diff --git a/package.json b/package.json
index 4726962..15402d2 100644
--- a/package.json
+++ b/package.json
@@ -11,6 +11,7 @@
   },
   "main": "./dist.js",
   "scripts": {
+    "version": "./node_modules/.bin/json -f package.json -I -e \"this.repository.sha = '$(git log -n1 --pretty=format:%H)'\"",
     "prepublish": "make build",
     "start": "make serve",
     "test": "make test"
@@ -24,6 +25,7 @@
     "babel-preset-es2015": "6.9.0",
     "eslint": "2.7.0",
     "gh-pages": "0.11.0",
+    "json": "9.0.4",
     "json-loader": "0.5.4",
     "lodash.defaultsdeep": "4.6.0",
     "raw-loader": "0.5.1",