diff --git a/ci-dev/linting_requirements.txt b/ci-dev/linting_requirements.txt
index efe7cbbe4f..036564b469 100644
--- a/ci-dev/linting_requirements.txt
+++ b/ci-dev/linting_requirements.txt
@@ -6,7 +6,7 @@ pyflakes==3.4.0
 
 flake8-broken-line==1.0.0
 flake8-isort==7.0.0
-isort==8.0.0
+isort==9.0.1
 flake8-requirements==2.3.0
 
 flake8-rst-docstrings==0.4.0