diff --git a/dev-requirements.txt b/dev-requirements.txt
index 9174920..673712c 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,3 +1,3 @@
 black==20.8b1
 bump2version==1.0.1
-isort==5.6.4
+isort==5.9.0