diff --git a/requirements-dev.txt b/requirements-dev.txt
index aec75746..6d525c86 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,7 +2,7 @@
 black==20.8b1
 coverage==5.5
 factory-boy==3.2.0
-flake8==3.9.0
+flake8==3.9.1
 flake8-blind-except==0.2.0
 flake8-debugger==4.0.0
 flake8-deprecated==1.3