diff --git a/auctioning_platform/requirements-dev.txt b/auctioning_platform/requirements-dev.txt
index 16d7ebc9..389e07df 100644
--- a/auctioning_platform/requirements-dev.txt
+++ b/auctioning_platform/requirements-dev.txt
@@ -1,5 +1,5 @@
 pip-tools==5.3.1
-isort==5.7.0
+isort==5.9.1
 black==20.8b1
 flake8==3.8.4
 mypy==0.790