diff --git a/tox.ini b/tox.ini
index 80481da7..3236b2fc 100644
--- a/tox.ini
+++ b/tox.ini
@@ -28,11 +28,11 @@ commands = pip install -U -r{toxinidir}/requirements/dev.txt
            pytest -rxs -xv --cov=kombu --cov-report=xml --no-cov-on-fail {posargs}
 
 basepython =
-    2.7,flakeplus,flake8,apicheck,linkcheck,cov,pydocstyle: python2.7
+    2.7,flakeplus,apicheck,linkcheck,cov,pydocstyle: python2.7
     3.4: python3.4
     3.5: python3.5
     3.6: python3.6
-    3.7: python3.7
+    3.7,flake8: python3.7
     pypy: pypy
 
 [testenv:apicheck]
@@ -45,7 +45,7 @@ commands = pip install -U -r{toxinidir}/requirements/dev.txt
 
 [testenv:flake8]
 commands =
-    flake8 {toxinidir}/kombu {toxinidir}/t
+    flake8 -j2 {toxinidir}/kombu {toxinidir}/t
 
 [testenv:flakeplus]
 commands =