diff --git a/armada/api/middleware.py b/armada/api/middleware.py
index 6c8738bb..c3b5596f 100644
--- a/armada/api/middleware.py
+++ b/armada/api/middleware.py
@@ -86,7 +86,7 @@ class ContextMiddleware(object):
     def is_valid_uuid(self, id, version=4):
         try:
             uuid_obj = UUID(id, version=version)
-        except:
+        except (TypeError, ValueError):
             return False
 
         return str(uuid_obj) == id
diff --git a/armada/cli/__init__.py b/armada/cli/__init__.py
index 0256c8d3..8f924f72 100644
--- a/armada/cli/__init__.py
+++ b/armada/cli/__init__.py
@@ -41,7 +41,7 @@ class CliAction(object):
         except ArmadaBaseException:
             self.logger.exception('Caught internal exception')
             sys.exit(1)
-        except:
+        except Exception:
             self.logger.exception('Caught unexpected exception')
             sys.exit(1)
 
diff --git a/armada/handlers/k8s.py b/armada/handlers/k8s.py
index 6a1045e0..5d48fcb5 100644
--- a/armada/handlers/k8s.py
+++ b/armada/handlers/k8s.py
@@ -41,7 +41,7 @@ class K8s(object):
         '''
         try:
             config.load_incluster_config()
-        except:
+        except config.config_exception.ConfigException:
             config.load_kube_config()
 
         self.client = client.CoreV1Api()
diff --git a/armada/tests/unit/utils/test_source.py b/armada/tests/unit/utils/test_source.py
index c07de599..caa6968b 100644
--- a/armada/tests/unit/utils/test_source.py
+++ b/armada/tests/unit/utils/test_source.py
@@ -35,7 +35,7 @@ def is_connected():
         host = socket.gethostbyname("www.github.com")
         socket.create_connection((host, 80), 2)
         return True
-    except:
+    except (socket.error, socket.herror, socket.timeout):
         pass
     return False
 
diff --git a/armada/utils/validate.py b/armada/utils/validate.py
index 5fad56c7..9e38c95b 100644
--- a/armada/utils/validate.py
+++ b/armada/utils/validate.py
@@ -229,7 +229,7 @@ def validate_armada_documents(documents):
 def validate_manifest_url(value):
     try:
         return (requests.get(value).status_code == 200)
-    except:
+    except requests.exceptions.RequestException:
         return False
 
 
diff --git a/tox.ini b/tox.ini
index d61790e3..c464841f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -55,5 +55,5 @@ commands =
 
 [flake8]
 filename = *.py
-ignore = E722
+ignore =
 exclude = .git,.tox,dist,*lib/python*,*egg,build,releasenotes,docs/*,hapi,venv