diff --git a/package.json b/package.json
index 6f65d2b..f881c7c 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
     "install": "node-gyp rebuild",
     "test": "mocha test -R spec",
     "coverage": "./node_modules/.bin/istanbul cover ./node_modules/.bin/_mocha -- --reporter spec test",
-    "postinstall": "node browser/build.js -a"
+    "prepublish": "node browser/build.js -a"
   },
   "dependencies": {
     "jssha": "=1.5.0",