diff --git a/package.json b/package.json
index 9e8ec110c..12249752b 100644
--- a/package.json
+++ b/package.json
@@ -33,38 +33,38 @@
     "unexpected-bluebird": "2.9.34-longstack2"
   },
   "devDependencies": {
-    "babel-cli": "6.26.0",
-    "babel-plugin-transform-runtime": "6.23.0",
-    "babel-preset-es2015-without-strict": "0.0.4",
-    "coveralls": "3.0.0",
-    "es5-shim": "4.5.9",
-    "eslint": "4.17.0",
-    "eslint-config-pretty-standard": "1.2.0",
-    "eslint-plugin-import": "2.8.0",
-    "eslint-plugin-prettier": "2.6.0",
-    "find-node-modules": "1.0.4",
-    "gh-pages": "1.1.0",
-    "istanbul": "0.4.5",
-    "jasmine": "2.8.0",
-    "jasmine-core": "2.8.0",
-    "jest": "21.2.1",
-    "minimist": "1.2.0",
+    "babel-cli": "^6.26.0",
+    "babel-plugin-transform-runtime": "^6.23.0",
+    "babel-preset-es2015-without-strict": "^0.0.4",
+    "coveralls": "^3.0.0",
+    "es5-shim": "^4.5.9",
+    "eslint": "^4.17.0",
+    "eslint-config-pretty-standard": "^1.2.0",
+    "eslint-plugin-import": "^2.8.0",
+    "eslint-plugin-prettier": "^2.6.0",
+    "find-node-modules": "^1.0.4",
+    "gh-pages": "^1.1.0",
+    "istanbul": "^0.4.5",
+    "jasmine": "^2.8.0",
+    "jasmine-core": "^2.8.0",
+    "jest": "^21.2.1",
+    "minimist": "^1.2.0",
     "mocha": "^3.2.0",
-    "mocha-phantomjs-core": "2.1.2",
-    "mocha-slow-reporter": "*",
-    "node-version-check": "2.2.0",
-    "nyc": "10.3.2",
-    "offline-github-changelog": "1.2.0",
-    "prettier": "1.10.2",
-    "rollup": "0.51.8",
-    "rollup-plugin-commonjs": "8.2.6",
-    "rollup-plugin-node-globals": "1.1.0",
-    "rollup-plugin-node-resolve": "3.0.0",
-    "rollup-plugin-uglify": "2.0.1",
-    "rsvp": "4.7.0",
+    "mocha-phantomjs-core": "^2.1.2",
+    "mocha-slow-reporter": "^*",
+    "node-version-check": "^2.2.0",
+    "nyc": "^10.3.2",
+    "offline-github-changelog": "^1.2.0",
+    "prettier": "^1.10.2",
+    "rollup": "^0.51.8",
+    "rollup-plugin-commonjs": "^8.2.6",
+    "rollup-plugin-node-globals": "^1.1.0",
+    "rollup-plugin-node-resolve": "^3.0.0",
+    "rollup-plugin-uglify": "^2.0.1",
+    "rsvp": "^4.7.0",
     "serve": "*",
     "unexpected-documentation-site-generator": "^4.6.1",
-    "unexpected-magicpen": "0.2.2",
+    "unexpected-magicpen": "^0.2.2",
     "unexpected-markdown": "^1.7.4"
   },
   "files": [