diff --git a/libraries/object-persistor/.circleci/config.yml b/libraries/object-persistor/.circleci/config.yml
new file mode 100644
index 0000000000..4a8a9e2d14
--- /dev/null
+++ b/libraries/object-persistor/.circleci/config.yml
@@ -0,0 +1,17 @@
+version: 2.1
+orbs:
+  node: circleci/node@1.1.6
+jobs:
+  build-and-test:
+    executor:
+      name: node/default
+    steps:
+      - checkout
+      - node/with-cache:
+          steps:
+            - run: npm install
+            - run: npm test
+workflows:
+    build-and-test:
+      jobs:
+        - build-and-test
\ No newline at end of file
diff --git a/libraries/object-persistor/package.json b/libraries/object-persistor/package.json
index abbed2a689..9cd8a80760 100644
--- a/libraries/object-persistor/package.json
+++ b/libraries/object-persistor/package.json
@@ -29,10 +29,12 @@
   },
   "devDependencies": {
     "chai": "^4.2.0",
+    "chai-as-promised": "^7.1.1",
     "eslint-config-prettier": "^6.11.0",
     "eslint-config-standard": "^14.1.1",
     "eslint-plugin-chai-expect": "^2.1.0",
     "eslint-plugin-chai-friendly": "^0.6.0",
+    "eslint-plugin-import": "^2.22.0",
     "eslint-plugin-mocha": "^7.0.1",
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-prettier": "^3.1.4",
diff --git a/libraries/object-persistor/test/unit/FSPersistorTests.js b/libraries/object-persistor/test/unit/FSPersistorTests.js
index 2a85e3e4e0..4c8594551d 100644
--- a/libraries/object-persistor/test/unit/FSPersistorTests.js
+++ b/libraries/object-persistor/test/unit/FSPersistorTests.js
@@ -62,8 +62,7 @@ describe('FSPersistorTests', function () {
         crypto,
         'node-uuid': uuid,
         // imported by PersistorHelper but otherwise unused here
-        'logger-sharelatex': {},
-        'metrics-sharelatex': {}
+        'logger-sharelatex': {}
       },
       globals: { console }
     }))({ paths: { uploadFolder: '/tmp' } })
diff --git a/libraries/object-persistor/test/unit/S3PersistorTests.js b/libraries/object-persistor/test/unit/S3PersistorTests.js
index 6fe9442c2b..96c3bfac10 100644
--- a/libraries/object-persistor/test/unit/S3PersistorTests.js
+++ b/libraries/object-persistor/test/unit/S3PersistorTests.js
@@ -28,8 +28,7 @@ describe('S3PersistorTests', function () {
   const filesSize = 33
   const md5 = 'ffffffff00000000ffffffff00000000'
 
-  let Metrics,
-    Logger,
+  let Logger,
     Transform,
     S3,
     Fs,
@@ -73,10 +72,6 @@ describe('S3PersistorTests', function () {
       promise: sinon.stub().resolves()
     }
 
-    Metrics = {
-      count: sinon.stub()
-    }
-
     ReadStream = {
       pipe: sinon.stub().returns('readStream'),
       on: sinon.stub(),
@@ -155,7 +150,6 @@ describe('S3PersistorTests', function () {
         './Errors': Errors,
         fs: Fs,
         stream: Stream,
-        'metrics-sharelatex': Metrics,
         crypto
       },
       globals: { console, Buffer }