diff --git a/setup.py b/setup.py
index fe08680..20f0eb5 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@ def get_version(fname="flake8_bandit.py"):
 VERSION = get_version()
 
 # What packages are required for this module to be executed?
-REQUIRED = ["flake8", "bandit>=1.7.3", "flake8-polyfill", "pycodestyle"]
+REQUIRED = ["flake8<5", "bandit>=1.7.3"]
 
 # What packages are optional?
 EXTRAS = {