diff --git a/package.json b/package.json
index 86d03ab..4a92921 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "axios": "^0.18.0",
     "bcrypt": "^3.0.0",
     "cheerio": "^1.0.0-rc.2",
-    "cron": "^1.3.0",
+    "cron": "1.3.0",
     "dotenv": "^6.0.0",
     "gm": "^1.23.1",
     "ioredis": "^3.2.2",