Pin Lerna

Author: gaearon

package.json

@@ -20,7 +20,7 @@
   "devDependencies": {
     "eslint": "^4.4.1",
     "husky": "^0.13.2",
-    "lerna": "^2.6.0",
+    "lerna": "2.6.0",
     "lerna-changelog": "^0.6.0",
     "lint-staged": "^3.3.1",
     "prettier": "1.6.1",