diff --git a/setup.cfg b/setup.cfg
index 130137251..61c79a3ae 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -60,7 +60,7 @@ dev =
     flake8-2020;python_version>'3.5'
     flake8-coding
     flake8-future-import
-    flake8-no-fstring
+    flake8-no-fstring;python_version>'3.5'
     flake8-pytest
     flake8-pytest-style;python_version>'3.5'