diff --git a/pyproject.toml b/pyproject.toml
index 285a49d..1a86d4c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,7 +17,7 @@ pytest-cov = ">=3,<7"
 pytest-mock = "^3.8.2"
 anyio = {extras = ["trio"], version = ">=3.6.1,<5.0.0"}
 tox = ">=3.26,<5.0"
-ruff = ">=0.5.0,<0.8.0"
+ruff = ">=0.5.0,<0.9.0"
 pyright = ">=1.1.350,<1.2"
 
 [tool.ruff]