diff --git a/package-lock.json b/package-lock.json
index 1037141..3382bbd 100644
--- a/package-lock.json
+++ b/package-lock.json
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+      "version": "git+https://github.com/Operational-Transformation/ot.js.git#8873b7e28e83f9adbf6c3a28ec639c9151a838ae",
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diff --git a/package.json b/package.json
index a613cb3..93eef79 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
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     "http-errors": "~1.6.2",
-    "mongoose": "^4.8.6",
+    "mongoose": "^5.7.5",
     "morgan": "~1.9.0",
     "nodemailer": "^3.1.5",
     "ot": "git+https://github.com/Operational-Transformation/ot.js.git",