diff --git a/requirements_dev.txt b/requirements_dev.txt
index 3ab85022..81024c99 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -3,7 +3,7 @@
 # pip install -r requirements_dev.txt
 #---------------------------------------------------------
 coveralls==3.3.1
-flake8==4.0.1
+flake8==5.0.4
 pillow==9.2.0
 pytest==7.1.2
 pytest-cache==1.0