diff --git a/setup.py b/setup.py
index 5eaf01b..301e1bd 100644
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,7 @@
 lint_requires = [
     "flake8==3.4.1",
     "yamllint==1.10.0",
-    "isort==4.2.15",
+    "isort==4.3.21",
     "pre-commit==2.0.1",
 ]