diff --git a/services/chat/app.js b/services/chat/app.js
index bb1238dd9c..b133723f08 100644
--- a/services/chat/app.js
+++ b/services/chat/app.js
@@ -8,6 +8,7 @@
 const logger = require('logger-sharelatex')
 const settings = require('settings-sharelatex')
 
+const mongodb = require('./app/js/mongodb')
 const Server = require('./app/js/server')
 
 if (!module.parent) {
@@ -22,12 +23,20 @@ if (!module.parent) {
       settings.internal != null ? settings.internal.chat : undefined,
       (x1) => x1.host
     ) || 'localhost'
-  Server.server.listen(port, host, function (error) {
-    if (error != null) {
-      throw error
-    }
-    return logger.info(`Chat starting up, listening on ${host}:${port}`)
-  })
+  mongodb.clientConnecting
+    .then(() => {
+      Server.server.listen(port, host, function (err) {
+        if (err) {
+          logger.fatal({ err }, `Cannot bind to ${host}:${port}. Exiting.`)
+          process.exit(1)
+        }
+        return logger.info(`Chat starting up, listening on ${host}:${port}`)
+      })
+    })
+    .catch((err) => {
+      logger.fatal({ err }, 'Cannot connect to mongo. Exiting.')
+      process.exit(1)
+    })
 }
 
 module.exports = Server.server
diff --git a/services/chat/app/js/Features/Messages/MessageHttpController.js b/services/chat/app/js/Features/Messages/MessageHttpController.js
index d352a93220..263623fbba 100644
--- a/services/chat/app/js/Features/Messages/MessageHttpController.js
+++ b/services/chat/app/js/Features/Messages/MessageHttpController.js
@@ -17,7 +17,7 @@ const metrics = require('metrics-sharelatex')
 const MessageManager = require('./MessageManager')
 const MessageFormatter = require('./MessageFormatter')
 const ThreadManager = require('../Threads/ThreadManager')
-const { ObjectId } = require('../../mongojs')
+const { ObjectId } = require('../../mongodb')
 
 module.exports = MessageHttpController = {
   DEFAULT_MESSAGE_LIMIT: 50,
diff --git a/services/chat/app/js/Features/Messages/MessageManager.js b/services/chat/app/js/Features/Messages/MessageManager.js
index c4c8acfc4e..aad03e99de 100644
--- a/services/chat/app/js/Features/Messages/MessageManager.js
+++ b/services/chat/app/js/Features/Messages/MessageManager.js
@@ -13,13 +13,12 @@
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
  */
 let MessageManager
-const mongojs = require('../../mongojs')
-const { db } = mongojs
-const { ObjectId } = mongojs
-const async = require('async')
+const { ObjectId, getCollection } = require('../../mongodb')
 const metrics = require('metrics-sharelatex')
 const logger = require('logger-sharelatex')
 
+const messagesCollectionPromise = getCollection('messages')
+
 module.exports = MessageManager = {
   createMessage(room_id, user_id, content, timestamp, callback) {
     if (callback == null) {
@@ -32,7 +31,15 @@ module.exports = MessageManager = {
       timestamp
     }
     newMessageOpts = this._ensureIdsAreObjectIds(newMessageOpts)
-    return db.messages.save(newMessageOpts, callback)
+    messagesCollectionPromise.then((messages) =>
+      messages.insertOne(newMessageOpts, function (error, confirmation) {
+        if (error) {
+          return callback(error)
+        }
+        newMessageOpts._id = confirmation.insertedId
+        callback(null, newMessageOpts)
+      })
+    )
   },
 
   getMessages(room_id, limit, before, callback) {
@@ -44,19 +51,25 @@ module.exports = MessageManager = {
       query.timestamp = { $lt: before }
     }
     query = this._ensureIdsAreObjectIds(query)
-    const cursor = db.messages.find(query).sort({ timestamp: -1 }).limit(limit)
-    return cursor.toArray(callback)
+    messagesCollectionPromise.then((messages) =>
+      messages
+        .find(query)
+        .sort({ timestamp: -1 })
+        .limit(limit)
+        .toArray(callback)
+    )
   },
 
   findAllMessagesInRooms(room_ids, callback) {
     if (callback == null) {
       callback = function (error, messages) {}
     }
-    return db.messages.find(
-      {
-        room_id: { $in: room_ids }
-      },
-      callback
+    messagesCollectionPromise.then((messages) =>
+      messages
+        .find({
+          room_id: { $in: room_ids }
+        })
+        .toArray(callback)
     )
   },
 
@@ -64,11 +77,13 @@ module.exports = MessageManager = {
     if (callback == null) {
       callback = function (error) {}
     }
-    return db.messages.remove(
-      {
-        room_id
-      },
-      callback
+    messagesCollectionPromise.then((messages) =>
+      messages.deleteMany(
+        {
+          room_id
+        },
+        callback
+      )
     )
   },
 
@@ -80,20 +95,17 @@ module.exports = MessageManager = {
       _id: message_id,
       room_id
     })
-    return db.messages.update(
-      query,
-      {
-        $set: {
-          content,
-          edited_at: timestamp
-        }
-      },
-      function (error) {
-        if (error != null) {
-          return callback(error)
-        }
-        return callback()
-      }
+    messagesCollectionPromise.then((messages) =>
+      messages.updateOne(
+        query,
+        {
+          $set: {
+            content,
+            edited_at: timestamp
+          }
+        },
+        callback
+      )
     )
   },
 
@@ -105,12 +117,9 @@ module.exports = MessageManager = {
       _id: message_id,
       room_id
     })
-    return db.messages.remove(query, function (error) {
-      if (error != null) {
-        return callback(error)
-      }
-      return callback()
-    })
+    messagesCollectionPromise.then((messages) =>
+      messages.deleteOne(query, callback)
+    )
   },
 
   _ensureIdsAreObjectIds(query) {
diff --git a/services/chat/app/js/Features/Threads/ThreadManager.js b/services/chat/app/js/Features/Threads/ThreadManager.js
index 7073ad5c63..ca132c2665 100644
--- a/services/chat/app/js/Features/Threads/ThreadManager.js
+++ b/services/chat/app/js/Features/Threads/ThreadManager.js
@@ -12,12 +12,12 @@
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
  */
 let ThreadManager
-const mongojs = require('../../mongojs')
-const { db } = mongojs
-const { ObjectId } = mongojs
+const { ObjectId, getCollection } = require('../../mongodb')
 const logger = require('logger-sharelatex')
 const metrics = require('metrics-sharelatex')
 
+const roomsCollectionPromise = getCollection('rooms')
+
 module.exports = ThreadManager = {
   GLOBAL_THREAD: 'GLOBAL',
 
@@ -50,38 +50,35 @@ module.exports = ThreadManager = {
       }
     }
 
-    return db.rooms.update(query, { $set: update }, { upsert: true }, function (
-      error
-    ) {
-      if (error != null) {
-        return callback(error)
-      }
-      return db.rooms.find(query, function (error, rooms) {
-        if (rooms == null) {
-          rooms = []
-        }
+    roomsCollectionPromise.then((rooms) =>
+      rooms.updateOne(query, { $set: update }, { upsert: true }, function (
+        error
+      ) {
         if (error != null) {
           return callback(error)
         }
-        return callback(null, rooms[0])
+        rooms.findOne(query, callback)
       })
-    })
+    )
   },
 
   findAllThreadRooms(project_id, callback) {
     if (callback == null) {
       callback = function (error, rooms) {}
     }
-    return db.rooms.find(
-      {
-        project_id: ObjectId(project_id.toString()),
-        thread_id: { $exists: true }
-      },
-      {
-        thread_id: 1,
-        resolved: 1
-      },
-      callback
+    roomsCollectionPromise.then((rooms) =>
+      rooms
+        .find(
+          {
+            project_id: ObjectId(project_id.toString()),
+            thread_id: { $exists: true }
+          },
+          {
+            thread_id: 1,
+            resolved: 1
+          }
+        )
+        .toArray(callback)
     )
   },
 
@@ -89,20 +86,22 @@ module.exports = ThreadManager = {
     if (callback == null) {
       callback = function (error) {}
     }
-    return db.rooms.update(
-      {
-        project_id: ObjectId(project_id.toString()),
-        thread_id: ObjectId(thread_id.toString())
-      },
-      {
-        $set: {
-          resolved: {
-            user_id,
-            ts: new Date()
+    roomsCollectionPromise.then((rooms) =>
+      rooms.updateOne(
+        {
+          project_id: ObjectId(project_id.toString()),
+          thread_id: ObjectId(thread_id.toString())
+        },
+        {
+          $set: {
+            resolved: {
+              user_id,
+              ts: new Date()
+            }
           }
-        }
-      },
-      callback
+        },
+        callback
+      )
     )
   },
 
@@ -110,17 +109,19 @@ module.exports = ThreadManager = {
     if (callback == null) {
       callback = function (error) {}
     }
-    return db.rooms.update(
-      {
-        project_id: ObjectId(project_id.toString()),
-        thread_id: ObjectId(thread_id.toString())
-      },
-      {
-        $unset: {
-          resolved: true
-        }
-      },
-      callback
+    roomsCollectionPromise.then((rooms) =>
+      rooms.updateOne(
+        {
+          project_id: ObjectId(project_id.toString()),
+          thread_id: ObjectId(thread_id.toString())
+        },
+        {
+          $unset: {
+            resolved: true
+          }
+        },
+        callback
+      )
     )
   },
 
@@ -135,16 +136,18 @@ module.exports = ThreadManager = {
       if (error != null) {
         return callback(error)
       }
-      return db.rooms.remove(
-        {
-          _id: room._id
-        },
-        function (error) {
-          if (error != null) {
-            return callback(error)
+      roomsCollectionPromise.then((rooms) =>
+        rooms.deleteOne(
+          {
+            _id: room._id
+          },
+          function (error) {
+            if (error != null) {
+              return callback(error)
+            }
+            return callback(null, room._id)
           }
-          return callback(null, room._id)
-        }
+        )
       )
     })
   }
diff --git a/services/chat/app/js/mongodb.js b/services/chat/app/js/mongodb.js
new file mode 100644
index 0000000000..245362a2a2
--- /dev/null
+++ b/services/chat/app/js/mongodb.js
@@ -0,0 +1,15 @@
+const Settings = require('settings-sharelatex')
+const { MongoClient, ObjectId } = require('mongodb')
+
+const clientConnecting = MongoClient.connect(Settings.mongo.url)
+const dbPromise = clientConnecting.then((client) => client.db())
+
+async function getCollection(name) {
+  return (await dbPromise).collection(name)
+}
+
+module.exports = {
+  clientConnecting,
+  ObjectId,
+  getCollection
+}
diff --git a/services/chat/app/js/mongojs.js b/services/chat/app/js/mongojs.js
deleted file mode 100644
index f73f6fc93f..0000000000
--- a/services/chat/app/js/mongojs.js
+++ /dev/null
@@ -1,9 +0,0 @@
-// TODO: This file was created by bulk-decaffeinate.
-// Sanity-check the conversion and remove this comment.
-const Settings = require('settings-sharelatex')
-const mongojs = require('mongojs')
-const db = mongojs(Settings.mongo.url, ['rooms', 'messages'])
-module.exports = {
-  db,
-  ObjectId: mongojs.ObjectId
-}
diff --git a/services/chat/app/js/router.js b/services/chat/app/js/router.js
index 2188dafaf8..ddce25e749 100644
--- a/services/chat/app/js/router.js
+++ b/services/chat/app/js/router.js
@@ -12,7 +12,7 @@
  */
 let Router
 const MessageHttpController = require('./Features/Messages/MessageHttpController')
-const { ObjectId } = require('./mongojs')
+const { ObjectId } = require('./mongodb')
 
 module.exports = Router = {
   route(app) {
diff --git a/services/chat/package-lock.json b/services/chat/package-lock.json
index b39f45b75d..52e04becc5 100644
--- a/services/chat/package-lock.json
+++ b/services/chat/package-lock.json
@@ -8,118 +8,22 @@
       "version": "7.8.3",
       "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.8.3.tgz",
       "integrity": "sha512-a9gxpmdXtZEInkCSHUJDLHZVBgb1QS0jhss4cPP93EW7s+uC5bikET2twEF3KV+7rDblJcmNvTR7VJejqd2C2g==",
+      "dev": true,
       "requires": {
         "@babel/highlight": "^7.8.3"
       }
     },
-    "@babel/generator": {
-      "version": "7.8.7",
-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.8.7.tgz",
-      "integrity": "sha512-DQwjiKJqH4C3qGiyQCAExJHoZssn49JTMJgZ8SANGgVFdkupcUhLOdkAeoC6kmHZCPfoDG5M0b6cFlSN5wW7Ew==",
-      "requires": {
-        "@babel/types": "^7.8.7",
-        "jsesc": "^2.5.1",
-        "lodash": "^4.17.13",
-        "source-map": "^0.5.0"
-      }
-    },
-    "@babel/helper-function-name": {
-      "version": "7.8.3",
-      "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.8.3.tgz",
-      "integrity": "sha512-BCxgX1BC2hD/oBlIFUgOCQDOPV8nSINxCwM3o93xP4P9Fq6aV5sgv2cOOITDMtCfQ+3PvHp3l689XZvAM9QyOA==",
-      "requires": {
-        "@babel/helper-get-function-arity": "^7.8.3",
-        "@babel/template": "^7.8.3",
-        "@babel/types": "^7.8.3"
-      }
-    },
-    "@babel/helper-get-function-arity": {
-      "version": "7.8.3",
-      "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.8.3.tgz",
-      "integrity": "sha512-FVDR+Gd9iLjUMY1fzE2SR0IuaJToR4RkCDARVfsBBPSP53GEqSFjD8gNyxg246VUyc/ALRxFaAK8rVG7UT7xRA==",
-      "requires": {
-        "@babel/types": "^7.8.3"
-      }
-    },
-    "@babel/helper-split-export-declaration": {
-      "version": "7.8.3",
-      "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.8.3.tgz",
-      "integrity": "sha512-3x3yOeyBhW851hroze7ElzdkeRXQYQbFIb7gLK1WQYsw2GWDay5gAJNw1sWJ0VFP6z5J1whqeXH/WCdCjZv6dA==",
-      "requires": {
-        "@babel/types": "^7.8.3"
-      }
-    },
     "@babel/highlight": {
       "version": "7.8.3",
       "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.8.3.tgz",
       "integrity": "sha512-PX4y5xQUvy0fnEVHrYOarRPXVWafSjTW9T0Hab8gVIawpl2Sj0ORyrygANq+KjcNlSSTw0YCLSNA8OyZ1I4yEg==",
+      "dev": true,
       "requires": {
         "chalk": "^2.0.0",
         "esutils": "^2.0.2",
         "js-tokens": "^4.0.0"
       }
     },
-    "@babel/parser": {
-      "version": "7.8.7",
-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.8.7.tgz",
-      "integrity": "sha512-9JWls8WilDXFGxs0phaXAZgpxTZhSk/yOYH2hTHC0X1yC7Z78IJfvR1vJ+rmJKq3I35td2XzXzN6ZLYlna+r/A=="
-    },
-    "@babel/template": {
-      "version": "7.8.6",
-      "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.8.6.tgz",
-      "integrity": "sha512-zbMsPMy/v0PWFZEhQJ66bqjhH+z0JgMoBWuikXybgG3Gkd/3t5oQ1Rw2WQhnSrsOmsKXnZOx15tkC4qON/+JPg==",
-      "requires": {
-        "@babel/code-frame": "^7.8.3",
-        "@babel/parser": "^7.8.6",
-        "@babel/types": "^7.8.6"
-      }
-    },
-    "@babel/traverse": {
-      "version": "7.8.6",
-      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.8.6.tgz",
-      "integrity": "sha512-2B8l0db/DPi8iinITKuo7cbPznLCEk0kCxDoB9/N6gGNg/gxOXiR/IcymAFPiBwk5w6TtQ27w4wpElgp9btR9A==",
-      "requires": {
-        "@babel/code-frame": "^7.8.3",
-        "@babel/generator": "^7.8.6",
-        "@babel/helper-function-name": "^7.8.3",
-        "@babel/helper-split-export-declaration": "^7.8.3",
-        "@babel/parser": "^7.8.6",
-        "@babel/types": "^7.8.6",
-        "debug": "^4.1.0",
-        "globals": "^11.1.0",
-        "lodash": "^4.17.13"
-      },
-      "dependencies": {
-        "debug": {
-          "version": "4.1.1",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
-          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
-          "requires": {
-            "ms": "^2.1.1"
-          }
-        },
-        "globals": {
-          "version": "11.12.0",
-          "resolved": "https://registry.npmjs.org/globals/-/globals-11.12.0.tgz",
-          "integrity": "sha512-WOBp/EEGUiIsJSp7wcv/y6MO+lV9UoncWqxuFfm8eBwzWNgyfBd6Gz+IeKQ9jCmyhoH99g15M3T+QaVHFjizVA=="
-        },
-        "ms": {
-          "version": "2.1.2",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
-          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
-        }
-      }
-    },
-    "@babel/types": {
-      "version": "7.8.7",
-      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.8.7.tgz",
-      "integrity": "sha512-k2TreEHxFA4CjGkL+GYjRyx35W0Mr7DP5+9q6WMkyKXB+904bYmG40syjMFV0oLlhhFCwWl0vA0DyzTDkwAiJw==",
-      "requires": {
-        "esutils": "^2.0.2",
-        "lodash": "^4.17.13",
-        "to-fast-properties": "^2.0.0"
-      }
-    },
     "@google-cloud/common": {
       "version": "2.4.0",
       "resolved": "https://registry.npmjs.org/@google-cloud/common/-/common-2.4.0.tgz",
@@ -1223,6 +1127,7 @@
       "version": "3.2.1",
       "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
       "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+      "dev": true,
       "requires": {
         "color-convert": "^1.9.0"
       }
@@ -1237,23 +1142,11 @@
         "picomatch": "^2.0.4"
       }
     },
-    "append-transform": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/append-transform/-/append-transform-1.0.0.tgz",
-      "integrity": "sha512-P009oYkeHyU742iSZJzZZywj4QRJdnTWffaKuJQLablCZ1uz6/cW4yaRgcDaoQ+uwOxxnt0gRUcwfsNP2ri0gw==",
-      "requires": {
-        "default-require-extensions": "^2.0.0"
-      }
-    },
-    "archy": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/archy/-/archy-1.0.0.tgz",
-      "integrity": "sha1-+cjBN1fMHde8N5rHeyxipcKGjEA="
-    },
     "argparse": {
       "version": "1.0.10",
       "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
       "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
+      "dev": true,
       "requires": {
         "sprintf-js": "~1.0.2"
       }
@@ -1488,9 +1381,9 @@
       "dev": true
     },
     "bson": {
-      "version": "1.1.3",
-      "resolved": "https://registry.npmjs.org/bson/-/bson-1.1.3.tgz",
-      "integrity": "sha512-TdiJxMVnodVS7r0BdL42y/pqC9cL2iKynVwA0Ho3qbsQYr428veL3l7BQyuqiw+Q5SqqoT0m4srSY/BlZ9AxXg=="
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/bson/-/bson-1.1.5.tgz",
+      "integrity": "sha512-kDuEzldR21lHciPQAIulLs1LZlCXdLziXI6Mb/TDkwXhb//UORJNPXgcRs2CuO4H0DcMkpfT3/ySsP3unoZjBg=="
     },
     "buffer-equal-constant-time": {
       "version": "1.0.1",
@@ -1519,33 +1412,6 @@
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.0.tgz",
       "integrity": "sha512-zauLjrfCG+xvoyaqLoV8bLVXXNGC4JqlxFCutSDWA6fJrTo2ZuvLYTqZ7aHBLZSMOopbzwv8f+wZcVzfVTI2Dg=="
     },
-    "caching-transform": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/caching-transform/-/caching-transform-3.0.2.tgz",
-      "integrity": "sha512-Mtgcv3lh3U0zRii/6qVgQODdPA4G3zhG+jtbCWj39RXuUFTMzH0vcdMtaJS1jPowd+It2Pqr6y3NJMQqOqCE2w==",
-      "requires": {
-        "hasha": "^3.0.0",
-        "make-dir": "^2.0.0",
-        "package-hash": "^3.0.0",
-        "write-file-atomic": "^2.4.2"
-      },
-      "dependencies": {
-        "make-dir": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-2.1.0.tgz",
-          "integrity": "sha512-LS9X+dc8KLxXCb8dni79fLIIUA5VyZoyjSMCwTluaXA0o27cCK0bhXkpgw+sTXVpPy/lSO57ilRixqk0vDmtRA==",
-          "requires": {
-            "pify": "^4.0.1",
-            "semver": "^5.6.0"
-          }
-        },
-        "pify": {
-          "version": "4.0.1",
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-          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg=="
+          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
+          "dev": true
         },
         "emoji-regex": {
           "version": "7.0.3",
           "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
-          "integrity": "sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA=="
+          "integrity": "sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA==",
+          "dev": true
         },
         "string-width": {
           "version": "3.1.0",
           "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
           "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
+          "dev": true,
           "requires": {
             "emoji-regex": "^7.0.1",
             "is-fullwidth-code-point": "^2.0.0",
@@ -7366,6 +6721,7 @@
           "version": "5.2.0",
           "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
           "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
+          "dev": true,
           "requires": {
             "ansi-regex": "^4.1.0"
           }
@@ -7390,6 +6746,7 @@
       "version": "2.4.3",
       "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-2.4.3.tgz",
       "integrity": "sha512-GaETH5wwsX+GcnzhPgKcKjJ6M2Cq3/iZp1WyY/X1CSqrW+jVNM9Y7D8EC2sM4ZG/V8wZlSniJnCKWPmBYAucRQ==",
+      "dev": true,
       "requires": {
         "graceful-fs": "^4.1.11",
         "imurmurhash": "^0.1.4",
@@ -7405,17 +6762,20 @@
     "y18n": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
-      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w=="
+      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
+      "dev": true
     },
     "yallist": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
-      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI="
+      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
+      "dev": true
     },
     "yargs": {
       "version": "13.3.0",
       "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.0.tgz",
       "integrity": "sha512-2eehun/8ALW8TLoIl7MVaRUrg+yCnenu8B4kBlRxj3GJGDKU1Og7sMXPNm1BYyM1DOJmTZ4YeN/Nwxv+8XJsUA==",
+      "dev": true,
       "requires": {
         "cliui": "^5.0.0",
         "find-up": "^3.0.0",
@@ -7432,17 +6792,20 @@
         "ansi-regex": {
           "version": "4.1.0",
           "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
-          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg=="
+          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
+          "dev": true
         },
         "emoji-regex": {
           "version": "7.0.3",
           "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
-          "integrity": "sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA=="
+          "integrity": "sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA==",
+          "dev": true
         },
         "find-up": {
           "version": "3.0.0",
           "resolved": "https://registry.npmjs.org/find-up/-/find-up-3.0.0.tgz",
           "integrity": "sha512-1yD6RmLI1XBfxugvORwlck6f75tYL+iR0jqwsOrOxMZyGYqUuDhJ0l4AXdO1iX/FTs9cBAMEk1gWSEx1kSbylg==",
+          "dev": true,
           "requires": {
             "locate-path": "^3.0.0"
           }
@@ -7451,6 +6814,7 @@
           "version": "3.0.0",
           "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-3.0.0.tgz",
           "integrity": "sha512-7AO748wWnIhNqAuaty2ZWHkQHRSNfPVIsPIfwEOWO22AmaoVrWavlOcMR5nzTLNYvp36X220/maaRsrec1G65A==",
+          "dev": true,
           "requires": {
             "p-locate": "^3.0.0",
             "path-exists": "^3.0.0"
@@ -7460,6 +6824,7 @@
           "version": "3.0.0",
           "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-3.0.0.tgz",
           "integrity": "sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ==",
+          "dev": true,
           "requires": {
             "p-limit": "^2.0.0"
           }
@@ -7468,6 +6833,7 @@
           "version": "3.1.0",
           "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
           "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
+          "dev": true,
           "requires": {
             "emoji-regex": "^7.0.1",
             "is-fullwidth-code-point": "^2.0.0",
@@ -7478,6 +6844,7 @@
           "version": "5.2.0",
           "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
           "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
+          "dev": true,
           "requires": {
             "ansi-regex": "^4.1.0"
           }
@@ -7488,6 +6855,7 @@
       "version": "13.1.1",
       "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.1.tgz",
       "integrity": "sha512-oVAVsHz6uFrg3XQheFII8ESO2ssAf9luWuAd6Wexsu4F3OtIW0o8IribPXYrD4WC24LWtPrJlGy87y5udK+dxQ==",
+      "dev": true,
       "requires": {
         "camelcase": "^5.0.0",
         "decamelize": "^1.2.0"
@@ -7496,7 +6864,8 @@
         "camelcase": {
           "version": "5.3.1",
           "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
-          "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg=="
+          "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==",
+          "dev": true
         }
       }
     },
diff --git a/services/chat/package.json b/services/chat/package.json
index f9e30c7da9..0224c68842 100644
--- a/services/chat/package.json
+++ b/services/chat/package.json
@@ -24,7 +24,7 @@
     "express": "4.17.1",
     "logger-sharelatex": "^2.2.0",
     "metrics-sharelatex": "^2.5.0",
-    "mongojs": "3.1.0",
+    "mongodb": "^3.6.0",
     "request": "^2.88.2",
     "settings-sharelatex": "^1.1.0"
   },
diff --git a/services/chat/test/acceptance/js/DeletingAMessageTests.js b/services/chat/test/acceptance/js/DeletingAMessageTests.js
index 6a5a2bd649..91212c73d9 100644
--- a/services/chat/test/acceptance/js/DeletingAMessageTests.js
+++ b/services/chat/test/acceptance/js/DeletingAMessageTests.js
@@ -8,7 +8,7 @@
  * DS102: Remove unnecessary code created because of implicit returns
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
  */
-const { ObjectId } = require('../../../app/js/mongojs')
+const { ObjectId } = require('../../../app/js/mongodb')
 const { expect } = require('chai')
 
 const ChatClient = require('./helpers/ChatClient')
diff --git a/services/chat/test/acceptance/js/DeletingAThreadTests.js b/services/chat/test/acceptance/js/DeletingAThreadTests.js
index d9b3b843f9..661fdb2149 100644
--- a/services/chat/test/acceptance/js/DeletingAThreadTests.js
+++ b/services/chat/test/acceptance/js/DeletingAThreadTests.js
@@ -9,7 +9,7 @@
  * DS102: Remove unnecessary code created because of implicit returns
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
  */
-const { ObjectId } = require('../../../app/js/mongojs')
+const { ObjectId } = require('../../../app/js/mongodb')
 const { expect } = require('chai')
 const crypto = require('crypto')
 
diff --git a/services/chat/test/acceptance/js/EditingAMessageTests.js b/services/chat/test/acceptance/js/EditingAMessageTests.js
index a554594ed3..489e8368a8 100644
--- a/services/chat/test/acceptance/js/EditingAMessageTests.js
+++ b/services/chat/test/acceptance/js/EditingAMessageTests.js
@@ -9,7 +9,7 @@
  * DS102: Remove unnecessary code created because of implicit returns
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
  */
-const { ObjectId } = require('../../../app/js/mongojs')
+const { ObjectId } = require('../../../app/js/mongodb')
 const { expect } = require('chai')
 
 const ChatClient = require('./helpers/ChatClient')
diff --git a/services/chat/test/acceptance/js/GettingMessagesTests.js b/services/chat/test/acceptance/js/GettingMessagesTests.js
index 61134fd38d..cb881c34a5 100644
--- a/services/chat/test/acceptance/js/GettingMessagesTests.js
+++ b/services/chat/test/acceptance/js/GettingMessagesTests.js
@@ -10,7 +10,7 @@
  * DS102: Remove unnecessary code created because of implicit returns
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
  */
-const { ObjectId } = require('../../../app/js/mongojs')
+const { ObjectId } = require('../../../app/js/mongodb')
 const { expect } = require('chai')
 const async = require('async')
 const crypto = require('crypto')
diff --git a/services/chat/test/acceptance/js/ResolvingAThreadTests.js b/services/chat/test/acceptance/js/ResolvingAThreadTests.js
index 543ae891a8..e322c21919 100644
--- a/services/chat/test/acceptance/js/ResolvingAThreadTests.js
+++ b/services/chat/test/acceptance/js/ResolvingAThreadTests.js
@@ -10,7 +10,7 @@
  * DS102: Remove unnecessary code created because of implicit returns
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
  */
-const { ObjectId } = require('../../../app/js/mongojs')
+const { ObjectId } = require('../../../app/js/mongodb')
 const { expect } = require('chai')
 const crypto = require('crypto')
 
diff --git a/services/chat/test/acceptance/js/SendingAMessageTests.js b/services/chat/test/acceptance/js/SendingAMessageTests.js
index 10883835cc..2496d24acb 100644
--- a/services/chat/test/acceptance/js/SendingAMessageTests.js
+++ b/services/chat/test/acceptance/js/SendingAMessageTests.js
@@ -11,7 +11,7 @@
  * DS102: Remove unnecessary code created because of implicit returns
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
  */
-const { ObjectId } = require('../../../app/js/mongojs')
+const { ObjectId } = require('../../../app/js/mongodb')
 const { expect } = require('chai')
 
 const ChatClient = require('./helpers/ChatClient')
diff --git a/services/chat/test/acceptance/js/helpers/ChatApp.js b/services/chat/test/acceptance/js/helpers/ChatApp.js
index 9271b21e37..2aa0742946 100644
--- a/services/chat/test/acceptance/js/helpers/ChatApp.js
+++ b/services/chat/test/acceptance/js/helpers/ChatApp.js
@@ -12,7 +12,6 @@
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
  */
 const app = require('../../../../app')
-require('logger-sharelatex').logger.level('error')
 
 module.exports = {
   running: false,