diff --git a/requirements-dev.txt b/requirements-dev.txt
index 83fec3b8a..28fd19ce4 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,7 +2,7 @@
 -r requirements.txt
 -r requirements-plot.txt
 
-flake8==3.7.7
+flake8==3.7.8
 flake8-type-annotations==0.1.0
 flake8-tidy-imports==2.0.0
 pytest==5.0.0