diff --git a/package.json b/package.json
index 7ae8904..07b8044 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "mysql": "^2.17.1",
     "phpjs": "^1.3.2",
     "purl": "^1.0.4",
-    "sequelize": "^3.23.3",
+    "sequelize": "^5.21.2",
     "sqlite3": "^3.1.1",
     "twig": "^0.8.9",
     "underscore": "^1.8.3",