diff --git a/pyproject.toml b/pyproject.toml
index 83d35bf..79fe910 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ requires = ["hatchling"]
 [dependency-groups]
 dev = [
   "debugpy>=1.8.14,<2",
-  "isort>=6.0.1,<7",
+  "isort>=6.0.1,<8",
   "ab-test-fixtures>=0.1.5,<1",
   "pre-commit>=4.2.0,<5",
   "pytest-asyncio>=1.0.0,<2",