diff --git a/pyproject.toml b/pyproject.toml
index 988e4cb0..523763d8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -196,7 +196,7 @@ dev = [
     "flake8-simplify==0.30.0",
     # hatch is required to support type hinting and proper packaging of the py.typed file.
     "hatch>=1.14.1",
-    "isort==8.0.1",
+    "isort==9.0.1",
     "ty==0.0.80",
     "prek>=0.3.3",
     "pre-commit-hooks==6.0.0",