diff --git a/pyproject.toml b/pyproject.toml
index d1a1ba5..354742f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -76,3 +76,8 @@ invalid-argument-type = "warn"
 testpaths = [
     "tests",
 ]
+
+[dependency-groups]
+dev = [
+    "pytest-timeout>=2.4.0",
+]