diff --git a/requirements.txt b/requirements.txt
index faaabe4a..31f770a5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ binaryornot==0.4.4
 # Code quality
 # ------------------------------------------------------------------------------
 black==20.8b1
-flake8==3.8.3
+flake8==3.9.2
 
 # Testing
 # ------------------------------------------------------------------------------