diff --git a/tox.ini b/tox.ini
index a138e1b..a47fb00 100644
--- a/tox.ini
+++ b/tox.ini
@@ -31,7 +31,7 @@ commands =
 basepython = python3
 skip_install = true
 deps =
-    flake8
+    flake8<3
     flake8-docstrings>=0.2.7
     flake8-import-order
 commands =