diff --git a/package.json b/package.json
index 12cca06..ac0f15c 100644
--- a/package.json
+++ b/package.json
@@ -5,6 +5,7 @@
     "gm-crypto": "^0.1.8",
     "jsbn": "^1.1.0",
     "lodash": "^4.17.21",
+    "pre-commit": "^1.2.2",
     "to-arraybuffer": "^1.0.1",
     "uview-plus": "^3.3.61"
   }