diff --git a/tox.ini b/tox.ini
index 7af7dd16b28..618e2cfdb1e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = coverage_clean, py27, py3{6, 8, 9}, py3, coverage_report, flake8
+envlist = coverage_clean, py27, py3{6, 8, 9}, py3, coverage_report
 skip_missing_interpreters = true
 isolated_build = true
 skipsdist = true