diff --git a/services/clsi/.dockerignore b/services/clsi/.dockerignore
index 74fdc35e80..bcbd758418 100644
--- a/services/clsi/.dockerignore
+++ b/services/clsi/.dockerignore
@@ -8,3 +8,4 @@ nodemon.json
 cache/
 compiles/
 db/
+output/
diff --git a/services/clsi/.mocharc.json b/services/clsi/.mocharc.json
new file mode 100644
index 0000000000..dc3280aa96
--- /dev/null
+++ b/services/clsi/.mocharc.json
@@ -0,0 +1,3 @@
+{
+  "require": "test/setup.js"
+}
diff --git a/services/clsi/.nvmrc b/services/clsi/.nvmrc
index 2baa2d433a..e68b860383 100644
--- a/services/clsi/.nvmrc
+++ b/services/clsi/.nvmrc
@@ -1 +1 @@
-10.23.1
+12.21.0
diff --git a/services/clsi/Dockerfile b/services/clsi/Dockerfile
index 7eaa03f814..b02e828a4d 100644
--- a/services/clsi/Dockerfile
+++ b/services/clsi/Dockerfile
@@ -2,7 +2,7 @@
 # Instead run bin/update_build_scripts from
 # https://github.com/sharelatex/sharelatex-dev-environment
 
-FROM node:10.23.1 as base
+FROM node:12.21.0 as base
 
 WORKDIR /app
 COPY install_deps.sh /app
@@ -23,6 +23,6 @@ FROM base
 
 COPY --from=app /app /app
 RUN mkdir -p cache compiles db output \
-  &&  chown node:node cache compiles db output
+&&  chown node:node cache compiles db output
 
 CMD ["node", "--expose-gc", "app.js"]
diff --git a/services/clsi/Makefile b/services/clsi/Makefile
index 040a9315e3..45a4bc0400 100644
--- a/services/clsi/Makefile
+++ b/services/clsi/Makefile
@@ -21,8 +21,10 @@ DOCKER_COMPOSE_TEST_UNIT = \
 	COMPOSE_PROJECT_NAME=test_unit_$(BUILD_DIR_NAME) $(DOCKER_COMPOSE)
 
 clean:
-	docker rmi ci/$(PROJECT_NAME):$(BRANCH_NAME)-$(BUILD_NUMBER)
-	docker rmi gcr.io/overleaf-ops/$(PROJECT_NAME):$(BRANCH_NAME)-$(BUILD_NUMBER)
+	-docker rmi ci/$(PROJECT_NAME):$(BRANCH_NAME)-$(BUILD_NUMBER)
+	-docker rmi gcr.io/overleaf-ops/$(PROJECT_NAME):$(BRANCH_NAME)-$(BUILD_NUMBER)
+	-$(DOCKER_COMPOSE_TEST_UNIT) down --rmi local
+	-$(DOCKER_COMPOSE_TEST_ACCEPTANCE) down --rmi local
 
 format:
 	$(DOCKER_COMPOSE) run --rm test_unit npm run --silent format
diff --git a/services/clsi/buildscript.txt b/services/clsi/buildscript.txt
index b2093150c1..a86911dc61 100644
--- a/services/clsi/buildscript.txt
+++ b/services/clsi/buildscript.txt
@@ -1,9 +1,9 @@
 clsi
---data-dirs=cache,compiles,db
+--data-dirs=cache,compiles,db,output
 --dependencies=
 --docker-repos=gcr.io/overleaf-ops
 --env-add=
 --env-pass-through=TEXLIVE_IMAGE
---node-version=10.23.1
+--node-version=12.21.0
 --public-repo=True
---script-version=3.4.0
+--script-version=3.7.0
diff --git a/services/clsi/test/acceptance/js/BrokenLatexFileTests.js b/services/clsi/test/acceptance/js/BrokenLatexFileTests.js
index c26e0c4018..34d3b37c92 100644
--- a/services/clsi/test/acceptance/js/BrokenLatexFileTests.js
+++ b/services/clsi/test/acceptance/js/BrokenLatexFileTests.js
@@ -10,7 +10,6 @@
  */
 const Client = require('./helpers/Client')
 const request = require('request')
-require('chai').should()
 const ClsiApp = require('./helpers/ClsiApp')
 
 describe('Broken LaTeX file', function () {
diff --git a/services/clsi/test/acceptance/js/DeleteOldFilesTest.js b/services/clsi/test/acceptance/js/DeleteOldFilesTest.js
index ae2d7c791e..064f6be67d 100644
--- a/services/clsi/test/acceptance/js/DeleteOldFilesTest.js
+++ b/services/clsi/test/acceptance/js/DeleteOldFilesTest.js
@@ -10,7 +10,6 @@
  */
 const Client = require('./helpers/Client')
 const request = require('request')
-require('chai').should()
 const ClsiApp = require('./helpers/ClsiApp')
 
 describe('Deleting Old Files', function () {
diff --git a/services/clsi/test/acceptance/js/ExampleDocumentTests.js b/services/clsi/test/acceptance/js/ExampleDocumentTests.js
index 5a67a0febc..92bab4b6cc 100644
--- a/services/clsi/test/acceptance/js/ExampleDocumentTests.js
+++ b/services/clsi/test/acceptance/js/ExampleDocumentTests.js
@@ -17,7 +17,6 @@
  */
 const Client = require('./helpers/Client')
 const request = require('request')
-require('chai').should()
 const fs = require('fs')
 const fsExtra = require('fs-extra')
 const ChildProcess = require('child_process')
diff --git a/services/clsi/test/acceptance/js/SimpleLatexFileTests.js b/services/clsi/test/acceptance/js/SimpleLatexFileTests.js
index dd45802692..7377afdaf1 100644
--- a/services/clsi/test/acceptance/js/SimpleLatexFileTests.js
+++ b/services/clsi/test/acceptance/js/SimpleLatexFileTests.js
@@ -10,7 +10,6 @@
  */
 const Client = require('./helpers/Client')
 const request = require('request')
-require('chai').should()
 const ClsiApp = require('./helpers/ClsiApp')
 
 describe('Simple LaTeX file', function () {
diff --git a/services/clsi/test/acceptance/js/SynctexTests.js b/services/clsi/test/acceptance/js/SynctexTests.js
index afe6330df3..e636912bea 100644
--- a/services/clsi/test/acceptance/js/SynctexTests.js
+++ b/services/clsi/test/acceptance/js/SynctexTests.js
@@ -11,7 +11,6 @@
  */
 const Client = require('./helpers/Client')
 const request = require('request')
-require('chai').should()
 const { expect } = require('chai')
 const ClsiApp = require('./helpers/ClsiApp')
 const crypto = require('crypto')
diff --git a/services/clsi/test/acceptance/js/TimeoutTests.js b/services/clsi/test/acceptance/js/TimeoutTests.js
index 36bcf9aa24..0d359bec0a 100644
--- a/services/clsi/test/acceptance/js/TimeoutTests.js
+++ b/services/clsi/test/acceptance/js/TimeoutTests.js
@@ -10,7 +10,6 @@
  */
 const Client = require('./helpers/Client')
 const request = require('request')
-require('chai').should()
 const ClsiApp = require('./helpers/ClsiApp')
 
 describe('Timed out compile', function () {
diff --git a/services/clsi/test/acceptance/js/UrlCachingTests.js b/services/clsi/test/acceptance/js/UrlCachingTests.js
index 03927ea1ef..9528efba95 100644
--- a/services/clsi/test/acceptance/js/UrlCachingTests.js
+++ b/services/clsi/test/acceptance/js/UrlCachingTests.js
@@ -11,7 +11,6 @@
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
  */
 const Client = require('./helpers/Client')
-require('chai').should()
 const sinon = require('sinon')
 const ClsiApp = require('./helpers/ClsiApp')
 
diff --git a/services/clsi/test/acceptance/js/WordcountTests.js b/services/clsi/test/acceptance/js/WordcountTests.js
index 73a11f7693..837eb47a2a 100644
--- a/services/clsi/test/acceptance/js/WordcountTests.js
+++ b/services/clsi/test/acceptance/js/WordcountTests.js
@@ -11,7 +11,6 @@
  */
 const Client = require('./helpers/Client')
 const request = require('request')
-require('chai').should()
 const { expect } = require('chai')
 const path = require('path')
 const fs = require('fs')
diff --git a/services/clsi/test/setup.js b/services/clsi/test/setup.js
new file mode 100644
index 0000000000..87532f0a26
--- /dev/null
+++ b/services/clsi/test/setup.js
@@ -0,0 +1,19 @@
+const chai = require('chai')
+const SandboxedModule = require('sandboxed-module')
+
+// Setup should interface
+chai.should()
+
+// Global SandboxedModule settings
+SandboxedModule.configure({
+  requires: {
+    'logger-sharelatex': {
+      log() {},
+      info() {},
+      warn() {},
+      error() {},
+      err() {}
+    }
+  },
+  globals: { Buffer, console, process }
+})
diff --git a/services/clsi/test/unit/js/CompileControllerTests.js b/services/clsi/test/unit/js/CompileControllerTests.js
index 70f67b602f..d8c7c12609 100644
--- a/services/clsi/test/unit/js/CompileControllerTests.js
+++ b/services/clsi/test/unit/js/CompileControllerTests.js
@@ -11,7 +11,6 @@
  */
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
-require('chai').should()
 const { expect } = require('chai')
 const modulePath = require('path').join(
   __dirname,
@@ -32,13 +31,7 @@ describe('CompileController', function () {
             }
           }
         }),
-        './ProjectPersistenceManager': (this.ProjectPersistenceManager = {}),
-        'logger-sharelatex': (this.logger = {
-          log: sinon.stub(),
-          error: sinon.stub(),
-          err: sinon.stub(),
-          warn: sinon.stub()
-        })
+        './ProjectPersistenceManager': (this.ProjectPersistenceManager = {})
       }
     })
     this.Settings.externalUrl = 'http://www.example.com'
diff --git a/services/clsi/test/unit/js/CompileManagerTests.js b/services/clsi/test/unit/js/CompileManagerTests.js
index 917dfe8cb7..e33783a185 100644
--- a/services/clsi/test/unit/js/CompileManagerTests.js
+++ b/services/clsi/test/unit/js/CompileManagerTests.js
@@ -15,7 +15,6 @@
  */
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
-require('chai').should()
 const modulePath = require('path').join(
   __dirname,
   '../../../app/js/CompileManager'
@@ -47,7 +46,6 @@ describe('CompileManager', function () {
           }
         }),
 
-        'logger-sharelatex': (this.logger = { log: sinon.stub(), info() {} }),
         child_process: (this.child_process = {}),
         './CommandRunner': (this.CommandRunner = {}),
         './DraftModeManager': (this.DraftModeManager = {}),
diff --git a/services/clsi/test/unit/js/ContentTypeMapperTests.js b/services/clsi/test/unit/js/ContentTypeMapperTests.js
index 21173bc526..b6363623d2 100644
--- a/services/clsi/test/unit/js/ContentTypeMapperTests.js
+++ b/services/clsi/test/unit/js/ContentTypeMapperTests.js
@@ -12,7 +12,6 @@
  */
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
-require('chai').should()
 const modulePath = require('path').join(
   __dirname,
   '../../../app/js/ContentTypeMapper'
diff --git a/services/clsi/test/unit/js/DockerLockManagerTests.js b/services/clsi/test/unit/js/DockerLockManagerTests.js
index 19c289a128..6adfa1231a 100644
--- a/services/clsi/test/unit/js/DockerLockManagerTests.js
+++ b/services/clsi/test/unit/js/DockerLockManagerTests.js
@@ -11,7 +11,6 @@
  */
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
-require('chai').should()
 const modulePath = require('path').join(
   __dirname,
   '../../../app/js/DockerLockManager'
@@ -21,11 +20,7 @@ describe('LockManager', function () {
   beforeEach(function () {
     return (this.LockManager = SandboxedModule.require(modulePath, {
       requires: {
-        'settings-sharelatex': (this.Settings = { clsi: { docker: {} } }),
-        'logger-sharelatex': (this.logger = {
-          log: sinon.stub(),
-          error: sinon.stub()
-        })
+        'settings-sharelatex': (this.Settings = { clsi: { docker: {} } })
       }
     }))
   })
diff --git a/services/clsi/test/unit/js/DockerRunnerTests.js b/services/clsi/test/unit/js/DockerRunnerTests.js
index 517179a962..67290e440d 100644
--- a/services/clsi/test/unit/js/DockerRunnerTests.js
+++ b/services/clsi/test/unit/js/DockerRunnerTests.js
@@ -15,7 +15,6 @@
  */
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
-require('chai').should()
 const { expect } = require('chai')
 const modulePath = require('path').join(
   __dirname,
@@ -33,12 +32,6 @@ describe('DockerRunner', function () {
           clsi: { docker: {} },
           path: {}
         }),
-        'logger-sharelatex': (this.logger = {
-          log: sinon.stub(),
-          error: sinon.stub(),
-          info: sinon.stub(),
-          warn: sinon.stub()
-        }),
         dockerode: (Docker = (function () {
           Docker = class Docker {
             static initClass() {
diff --git a/services/clsi/test/unit/js/DraftModeManagerTests.js b/services/clsi/test/unit/js/DraftModeManagerTests.js
index 937cde90d9..13291e0262 100644
--- a/services/clsi/test/unit/js/DraftModeManagerTests.js
+++ b/services/clsi/test/unit/js/DraftModeManagerTests.js
@@ -10,7 +10,6 @@
  */
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
-require('chai').should()
 const modulePath = require('path').join(
   __dirname,
   '../../../app/js/DraftModeManager'
@@ -20,8 +19,7 @@ describe('DraftModeManager', function () {
   beforeEach(function () {
     return (this.DraftModeManager = SandboxedModule.require(modulePath, {
       requires: {
-        fs: (this.fs = {}),
-        'logger-sharelatex': (this.logger = { log() {} })
+        fs: (this.fs = {})
       }
     }))
   })
diff --git a/services/clsi/test/unit/js/LatexRunnerTests.js b/services/clsi/test/unit/js/LatexRunnerTests.js
index 9cd0d0ac95..a9116d0fd7 100644
--- a/services/clsi/test/unit/js/LatexRunnerTests.js
+++ b/services/clsi/test/unit/js/LatexRunnerTests.js
@@ -11,7 +11,6 @@
  */
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
-require('chai').should()
 const modulePath = require('path').join(
   __dirname,
   '../../../app/js/LatexRunner'
@@ -28,10 +27,6 @@ describe('LatexRunner', function () {
             socketPath: '/var/run/docker.sock'
           }
         }),
-        'logger-sharelatex': (this.logger = {
-          log: sinon.stub(),
-          error: sinon.stub()
-        }),
         './Metrics': {
           Timer: (Timer = class Timer {
             done() {}
diff --git a/services/clsi/test/unit/js/LockManagerTests.js b/services/clsi/test/unit/js/LockManagerTests.js
index 16a43ade48..58580583ca 100644
--- a/services/clsi/test/unit/js/LockManagerTests.js
+++ b/services/clsi/test/unit/js/LockManagerTests.js
@@ -11,7 +11,6 @@
  */
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
-require('chai').should()
 const modulePath = require('path').join(
   __dirname,
   '../../../app/js/LockManager'
@@ -24,11 +23,6 @@ describe('DockerLockManager', function () {
     this.LockManager = SandboxedModule.require(modulePath, {
       requires: {
         'settings-sharelatex': {},
-        'logger-sharelatex': (this.logger = {
-          log: sinon.stub(),
-          error: sinon.stub(),
-          err() {}
-        }),
         fs: {
           lstat: sinon.stub().callsArgWith(1),
           readdir: sinon.stub().callsArgWith(1)
diff --git a/services/clsi/test/unit/js/OutputFileFinderTests.js b/services/clsi/test/unit/js/OutputFileFinderTests.js
index 8744c6e779..d094f7c66d 100644
--- a/services/clsi/test/unit/js/OutputFileFinderTests.js
+++ b/services/clsi/test/unit/js/OutputFileFinderTests.js
@@ -12,7 +12,6 @@
  */
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
-require('chai').should()
 const modulePath = require('path').join(
   __dirname,
   '../../../app/js/OutputFileFinder'
@@ -26,8 +25,7 @@ describe('OutputFileFinder', function () {
     this.OutputFileFinder = SandboxedModule.require(modulePath, {
       requires: {
         fs: (this.fs = {}),
-        child_process: { spawn: (this.spawn = sinon.stub()) },
-        'logger-sharelatex': { log: sinon.stub(), warn: sinon.stub() }
+        child_process: { spawn: (this.spawn = sinon.stub()) }
       },
       globals: {
         Math // used by lodash
diff --git a/services/clsi/test/unit/js/OutputFileOptimiserTests.js b/services/clsi/test/unit/js/OutputFileOptimiserTests.js
index e7f7b8b0c8..4c78666084 100644
--- a/services/clsi/test/unit/js/OutputFileOptimiserTests.js
+++ b/services/clsi/test/unit/js/OutputFileOptimiserTests.js
@@ -12,7 +12,6 @@
  */
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
-require('chai').should()
 const modulePath = require('path').join(
   __dirname,
   '../../../app/js/OutputFileOptimiser'
@@ -28,7 +27,6 @@ describe('OutputFileOptimiser', function () {
         fs: (this.fs = {}),
         path: (this.Path = {}),
         child_process: { spawn: (this.spawn = sinon.stub()) },
-        'logger-sharelatex': { log: sinon.stub(), warn: sinon.stub() },
         './Metrics': {}
       },
       globals: { Math } // used by lodash
diff --git a/services/clsi/test/unit/js/ProjectPersistenceManagerTests.js b/services/clsi/test/unit/js/ProjectPersistenceManagerTests.js
index 5e4368fd40..5fb1827206 100644
--- a/services/clsi/test/unit/js/ProjectPersistenceManagerTests.js
+++ b/services/clsi/test/unit/js/ProjectPersistenceManagerTests.js
@@ -13,7 +13,6 @@
  */
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
-require('chai').should()
 const assert = require('chai').assert
 const modulePath = require('path').join(
   __dirname,
@@ -28,11 +27,6 @@ describe('ProjectPersistenceManager', function () {
         './UrlCache': (this.UrlCache = {}),
         './CompileManager': (this.CompileManager = {}),
         diskusage: (this.diskusage = { check: sinon.stub() }),
-        'logger-sharelatex': (this.logger = {
-          log: sinon.stub(),
-          warn: sinon.stub(),
-          err: sinon.stub()
-        }),
         'settings-sharelatex': (this.settings = {
           project_cache_length_ms: 1000
         }),
diff --git a/services/clsi/test/unit/js/RequestParserTests.js b/services/clsi/test/unit/js/RequestParserTests.js
index 6e6c922571..ff2ef7a9d1 100644
--- a/services/clsi/test/unit/js/RequestParserTests.js
+++ b/services/clsi/test/unit/js/RequestParserTests.js
@@ -11,7 +11,6 @@
  */
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
-require('chai').should()
 const { expect } = require('chai')
 const modulePath = require('path').join(
   __dirname,
diff --git a/services/clsi/test/unit/js/ResourceStateManagerTests.js b/services/clsi/test/unit/js/ResourceStateManagerTests.js
index e2bc073844..1536299c2d 100644
--- a/services/clsi/test/unit/js/ResourceStateManagerTests.js
+++ b/services/clsi/test/unit/js/ResourceStateManagerTests.js
@@ -12,7 +12,6 @@
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
 const { expect } = require('chai')
-const should = require('chai').should()
 const modulePath = require('path').join(
   __dirname,
   '../../../app/js/ResourceStateManager'
@@ -26,7 +25,6 @@ describe('ResourceStateManager', function () {
       singleOnly: true,
       requires: {
         fs: (this.fs = {}),
-        'logger-sharelatex': { log: sinon.stub(), err: sinon.stub() },
         './SafeReader': (this.SafeReader = {})
       }
     })
diff --git a/services/clsi/test/unit/js/ResourceWriterTests.js b/services/clsi/test/unit/js/ResourceWriterTests.js
index 030fe70eb2..267fc2c3a8 100644
--- a/services/clsi/test/unit/js/ResourceWriterTests.js
+++ b/services/clsi/test/unit/js/ResourceWriterTests.js
@@ -13,7 +13,6 @@
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
 const { expect } = require('chai')
-const should = require('chai').should()
 const modulePath = require('path').join(
   __dirname,
   '../../../app/js/ResourceWriter'
@@ -34,7 +33,6 @@ describe('ResourceWriter', function () {
         wrench: (this.wrench = {}),
         './UrlCache': (this.UrlCache = {}),
         './OutputFileFinder': (this.OutputFileFinder = {}),
-        'logger-sharelatex': { log: sinon.stub(), err: sinon.stub() },
         './Metrics': (this.Metrics = {
           inc: sinon.stub(),
           Timer: (Timer = (function () {
@@ -407,7 +405,7 @@ describe('ResourceWriter', function () {
       })
 
       return it('should not return an error if the resource writer errored', function () {
-        return should.not.exist(this.callback.args[0][0])
+        return expect(this.callback.args[0][0]).not.to.exist
       })
     })
 
diff --git a/services/clsi/test/unit/js/StaticServerForbidSymlinksTests.js b/services/clsi/test/unit/js/StaticServerForbidSymlinksTests.js
index 9a72168f1f..65a66f3dc3 100644
--- a/services/clsi/test/unit/js/StaticServerForbidSymlinksTests.js
+++ b/services/clsi/test/unit/js/StaticServerForbidSymlinksTests.js
@@ -9,7 +9,6 @@
  * DS102: Remove unnecessary code created because of implicit returns
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
  */
-const should = require('chai').should()
 const SandboxedModule = require('sandboxed-module')
 const assert = require('assert')
 const path = require('path')
@@ -32,11 +31,6 @@ describe('StaticServerForbidSymlinks', function () {
     this.ForbidSymlinks = SandboxedModule.require(modulePath, {
       requires: {
         'settings-sharelatex': this.settings,
-        'logger-sharelatex': {
-          log() {},
-          warn() {},
-          error() {}
-        },
         fs: this.fs
       }
     })
diff --git a/services/clsi/test/unit/js/TikzManager.js b/services/clsi/test/unit/js/TikzManager.js
index 4304edc028..30a3807552 100644
--- a/services/clsi/test/unit/js/TikzManager.js
+++ b/services/clsi/test/unit/js/TikzManager.js
@@ -10,7 +10,6 @@
  */
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
-require('chai').should()
 const modulePath = require('path').join(
   __dirname,
   '../../../app/js/TikzManager'
@@ -22,8 +21,7 @@ describe('TikzManager', function () {
       requires: {
         './ResourceWriter': (this.ResourceWriter = {}),
         './SafeReader': (this.SafeReader = {}),
-        fs: (this.fs = {}),
-        'logger-sharelatex': (this.logger = { log() {} })
+        fs: (this.fs = {})
       }
     }))
   })
diff --git a/services/clsi/test/unit/js/UrlCacheTests.js b/services/clsi/test/unit/js/UrlCacheTests.js
index 023b92de51..2b991245a9 100644
--- a/services/clsi/test/unit/js/UrlCacheTests.js
+++ b/services/clsi/test/unit/js/UrlCacheTests.js
@@ -12,7 +12,6 @@
  */
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
-require('chai').should()
 const modulePath = require('path').join(__dirname, '../../../app/js/UrlCache')
 const { EventEmitter } = require('events')
 
@@ -25,7 +24,6 @@ describe('UrlCache', function () {
       requires: {
         './db': {},
         './UrlFetcher': (this.UrlFetcher = {}),
-        'logger-sharelatex': (this.logger = { log: sinon.stub() }),
         'settings-sharelatex': (this.Settings = {
           path: { clsiCacheDir: '/cache/dir' }
         }),
diff --git a/services/clsi/test/unit/js/UrlFetcherTests.js b/services/clsi/test/unit/js/UrlFetcherTests.js
index 96ef457433..238e5d8aa9 100644
--- a/services/clsi/test/unit/js/UrlFetcherTests.js
+++ b/services/clsi/test/unit/js/UrlFetcherTests.js
@@ -11,7 +11,6 @@
 const SandboxedModule = require('sandboxed-module')
 const sinon = require('sinon')
 const { expect } = require('chai')
-require('chai').should()
 const modulePath = require('path').join(__dirname, '../../../app/js/UrlFetcher')
 const { EventEmitter } = require('events')
 
@@ -25,10 +24,6 @@ describe('UrlFetcher', function () {
           defaults: (this.defaults = sinon.stub().returns((this.request = {})))
         },
         fs: (this.fs = {}),
-        'logger-sharelatex': (this.logger = {
-          log: sinon.stub(),
-          error: sinon.stub()
-        }),
         'settings-sharelatex': (this.settings = {})
       }
     }))