diff --git a/pyproject.toml b/pyproject.toml
index 6b3f2cc..1947e88 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,7 +34,7 @@ pytest-cov = ">=3,<6"
 pytest-mock = "^3.7.0"
 pyright = "^1.1.273"
 pytest-pyright = ">=0.0.3,<0.0.7"
-attrs = "^23.1.0"
+attrs = ">=23.1,<25.0"
 
 [tool.coverage.run]
 branch = true