diff --git a/backend/code_coverage_backend/backend/build.py b/backend/code_coverage_backend/backend/build.py
index bf5d2ef00..72b438c00 100644
--- a/backend/code_coverage_backend/backend/build.py
+++ b/backend/code_coverage_backend/backend/build.py
@@ -34,12 +34,12 @@
     strict_transport_security_max_age=flask_talisman.talisman.ONE_YEAR_IN_SECS,
     strict_transport_security_include_subdomains=True,
     content_security_policy={
-        'default-src': '\'none\'',
+        'default-src': "'none'",
         # unsafe-inline is needed for the Swagger UI
-        'script-src': '\'self\' \'unsafe-inline\'',
-        'style-src': '\'self\' \'unsafe-inline\'',
-        'img-src': '\'self\'',
-        'connect-src': '\'self\'',
+        'script-src': "'self' 'unsafe-inline'",
+        'style-src': "'self' 'unsafe-inline'",
+        'img-src': "'self'",
+        'connect-src': "'self'",
     },
     content_security_policy_report_uri=None,
     content_security_policy_report_only=False,
diff --git a/backend/requirements-dev.txt b/backend/requirements-dev.txt
index 545fe67bb..d66ad3ac8 100644
--- a/backend/requirements-dev.txt
+++ b/backend/requirements-dev.txt
@@ -1,5 +1,7 @@
 fakeredis==1.0.3
 flake8==3.7.8
+flake8-coding
 flake8-isort==2.7.0
+flake8-quotes
 pytest==5.0.1
 responses==0.10.6
diff --git a/bot/code_coverage_bot/artifacts.py b/bot/code_coverage_bot/artifacts.py
index dec737d14..8adb45867 100644
--- a/bot/code_coverage_bot/artifacts.py
+++ b/bot/code_coverage_bot/artifacts.py
@@ -39,7 +39,7 @@ def get(self, platform=None, suite=None, chunk=None):
         files = os.listdir(self.parent_dir)
 
         if suite is not None and chunk is not None:
-            raise Exception('suite and chunk can\'t both have a value')
+            raise Exception("suite and chunk can't both have a value")
 
         # Filter artifacts according to platform, suite and chunk.
         filtered_files = []
diff --git a/bot/code_coverage_bot/codecov.py b/bot/code_coverage_bot/codecov.py
index bbdafc60f..f6259f9f5 100644
--- a/bot/code_coverage_bot/codecov.py
+++ b/bot/code_coverage_bot/codecov.py
@@ -229,4 +229,4 @@ def go(self):
         elif self.repository == MOZILLA_CENTRAL_REPOSITORY:
             self.go_from_trigger_mozilla_central()
         else:
-            assert False, 'We shouldn\'t be here!'
+            assert False, "We shouldn't be here!"
diff --git a/bot/code_coverage_bot/utils.py b/bot/code_coverage_bot/utils.py
index f38c22d7e..e6ea0a894 100644
--- a/bot/code_coverage_bot/utils.py
+++ b/bot/code_coverage_bot/utils.py
@@ -56,7 +56,7 @@ def run_check(command, **kwargs):
     assert isinstance(command, list)
 
     if len(command) == 0:
-        raise RunException('Can\'t run an empty command.')
+        raise RunException("Can't run an empty command.")
 
     _kwargs = dict(
         stdin=subprocess.DEVNULL,  # no interactions
diff --git a/bot/requirements-dev.txt b/bot/requirements-dev.txt
index caaf01f0e..ea1ba9fd5 100644
--- a/bot/requirements-dev.txt
+++ b/bot/requirements-dev.txt
@@ -1,5 +1,7 @@
 flake8==3.7.8
+flake8-coding
 flake8-isort==2.7.0
+flake8-quotes
 jsonschema==3.0.1
 json-e==3.0.0
 pytest==5.0.1
diff --git a/bot/tests/test_artifacts.py b/bot/tests/test_artifacts.py
index 85cdc02cd..88ddf2d2d 100644
--- a/bot/tests/test_artifacts.py
+++ b/bot/tests/test_artifacts.py
@@ -72,7 +72,7 @@ def add_dir(files):
         'linux_xpcshell-7_code-coverage-grcov.zip'
     ])
 
-    with pytest.raises(Exception, match='suite and chunk can\'t both have a value'):
+    with pytest.raises(Exception, match="suite and chunk can't both have a value"):
         a.get(chunk='xpcshell-7', suite='mochitest')
 
 
diff --git a/bot/tests/test_hook.py b/bot/tests/test_hook.py
index 49a77f588..78526d6b3 100644
--- a/bot/tests/test_hook.py
+++ b/bot/tests/test_hook.py
@@ -32,14 +32,14 @@
 ]
 
 
-@pytest.mark.parametrize("payload", payloads)
+@pytest.mark.parametrize('payload', payloads)
 def test_hook_syntax(payload):
     '''
     Validate the Taskcluster hook syntax
     '''
     assert os.path.exists(HOOK)
 
-    with open(HOOK, "r") as f:
+    with open(HOOK, 'r') as f:
         # Patch the hook as in the taskboot deployment
         content = f.read()
         content = content.replace('REVISION', 'deadbeef1234')
@@ -48,6 +48,6 @@ def test_hook_syntax(payload):
         # Now parse it as json
         hook_content = json.loads(content)
 
-    jsonschema.validate(instance=payload, schema=hook_content["triggerSchema"])
+    jsonschema.validate(instance=payload, schema=hook_content['triggerSchema'])
 
     jsone.render(hook_content, context=payload)