diff --git a/requirements.txt b/requirements.txt
index 7e8c2ff..efbad5b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,5 +2,5 @@ flake8==3.7.8
 pytest==4.6.3
 pytest-cov==2.7.1
 tox==3.14.0
-isort==4.3.18
+isort==5.6.4
 -e .