diff --git a/cvat/requirements/development.txt b/cvat/requirements/development.txt
index 258cf26db855..ec53eb584733 100644
--- a/cvat/requirements/development.txt
+++ b/cvat/requirements/development.txt
@@ -1,6 +1,6 @@
 -r base.txt
 astroid==2.2.5
-isort==4.3.4
+isort==4.3.21
 lazy-object-proxy==1.3.1
 mccabe==0.6.1
 pylint==2.3.1