diff --git a/src/requirements/dev.txt b/src/requirements/dev.txt
index d4fa416e..134b800b 100644
--- a/src/requirements/dev.txt
+++ b/src/requirements/dev.txt
@@ -6,6 +6,6 @@ coverage==5.5
 codecov==2.1.11
 black==21.5b1
 pre-commit==2.12.1
-isort==5.8.0
+isort==5.9.1
 hypothesis==6.13.1
 flake8==3.9.2