diff --git a/packages/serialization/multipart/requirements-dev.txt b/packages/serialization/multipart/requirements-dev.txt
index f27a1880..4054c47c 100644
--- a/packages/serialization/multipart/requirements-dev.txt
+++ b/packages/serialization/multipart/requirements-dev.txt
@@ -2,7 +2,7 @@
 -e ../json
 -e .
 yapf>=0.40.2,<0.44.0
-isort>=5.13.2,<9.0.0
+isort>=8.0.1,<9.0.0
 pylint>=3.2.7,<5.0.0
 mypy>=1.11.2,<3.0.0
 pytest>=8.3.2,<10.0.0