diff --git a/services/chat/npm-shrinkwrap.json b/services/chat/npm-shrinkwrap.json
new file mode 100644
index 0000000000..83d9a220eb
--- /dev/null
+++ b/services/chat/npm-shrinkwrap.json
@@ -0,0 +1,1253 @@
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+                      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz"
+                    }
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+                },
+                "uid-number": {
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+                  "from": "uid-number@~0.0.6",
+                  "resolved": "https://registry.npmjs.org/uid-number/-/uid-number-0.0.6.tgz"
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+}
diff --git a/services/chat/package.json b/services/chat/package.json
index bb5bd66944..40e31e38c9 100644
--- a/services/chat/package.json
+++ b/services/chat/package.json
@@ -12,7 +12,7 @@
     "express": "3.3.1",
     "logger-sharelatex": "git+https://github.com/sharelatex/logger-sharelatex.git#master",
     "metrics-sharelatex": "git+https://github.com/sharelatex/metrics-sharelatex.git#v1.6.0",
-    "mongojs": "^2.4.0",
+    "mongojs": "0.18.2",
     "redis": "~0.10.1",
     "request": "^2.79.0",
     "settings-sharelatex": "git+https://github.com/sharelatex/settings-sharelatex.git#v1.0.0",