diff --git a/package.json b/package.json
index 768b9e6..a0c3574 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
     "morgan": "~1.6.1",
     "mysql": "^2.10.2",
     "oauth2-server": "^3.0.0-b2",
-    "sequelize": "^3.23.1",
+    "sequelize": "^5.21.3",
     "serve-favicon": "~2.3.0"
   },
   "devDependencies": {