diff --git a/package.json b/package.json
index 170484a..683e281 100644
--- a/package.json
+++ b/package.json
@@ -23,8 +23,12 @@
   "dependencies": {
     "pbkdf2-compat": "2.0.0"
   },
+  "browser": {
+    "crypto": "crypto-browserify"
+  },
   "devDependencies": {
     "browserify": "^5.12.0",
+    "crypto-browserify": "3.2.4",
     "mocha": "^1.17.1",
     "sinon": "^1.10.3"
   },