diff --git a/requirements_dev.txt b/requirements_dev.txt
index e338e4f..0363b6f 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -3,7 +3,7 @@ bump2version==1.0.1
 wheel==0.35.1
 watchdog==0.10.3
 black==20.8b1
-isort==5.6.3
+isort==5.6.4
 tox==3.20.1
 coverage==5.3
 coveralls==2.1.2