diff --git a/requirements/dev.txt b/requirements/dev.txt
index c22b06a..8aca052 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -6,7 +6,7 @@ coverage==4.5.1
 cython==0.28.2
 flake8==3.5.0
 gunicorn==19.7.1
-isort==4.3.4
+isort==5.11.3
 multidict==4.1.0
 pip==10.0.0
 pyflakes==1.6.0