diff --git a/dev-requirements.txt b/dev-requirements.txt
index 06a54888..4f92f379 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,7 +1,6 @@
 -rrequirements.txt
 
-sphinx==1.8.3
 pytest==5.4.3
-pep8==1.7.1
+flake8==3.8.3
 pytest-timeout==1.3.3
 pytest-aiohttp==0.3.0