diff --git a/configutilities/configutilities/tox.ini b/configutilities/configutilities/tox.ini
index 8c979758b7..18d31d776e 100644
--- a/configutilities/configutilities/tox.ini
+++ b/configutilities/configutilities/tox.ini
@@ -18,5 +18,5 @@ commands = {posargs}
 
 [testenv:flake8]
 basepython = python2.7
-deps = flake8
+deps = flake8<3.6.0
 commands = flake8 {posargs}
diff --git a/controllerconfig/controllerconfig/tox.ini b/controllerconfig/controllerconfig/tox.ini
index 4d023f5f0b..6e3b4ba929 100644
--- a/controllerconfig/controllerconfig/tox.ini
+++ b/controllerconfig/controllerconfig/tox.ini
@@ -30,7 +30,7 @@ commands = pylint {posargs} controllerconfig --rcfile=./pylint.rc --extension-pk
 
 [testenv:flake8]
 basepython = python2.7
-deps = flake8
+deps = flake8<3.6.0
 commands = flake8 {posargs}
 
 [flake8]
diff --git a/sysinv/sysinv/sysinv/tox.ini b/sysinv/sysinv/sysinv/tox.ini
index 36712359f6..8675fff048 100644
--- a/sysinv/sysinv/sysinv/tox.ini
+++ b/sysinv/sysinv/sysinv/tox.ini
@@ -84,7 +84,7 @@ builtins = _
 
 [testenv:flake8]
 basepython = python2.7
-deps = flake8
+deps = flake8<3.6.0
 commands =
   flake8 {posargs} . \
     sysinv/cmd/manage-partitions \