diff --git a/pyproject.toml b/pyproject.toml
index bb4575553..ea9b3777a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -111,6 +111,8 @@ develop = [
   "pytest-cov",
   "pytest-mock",
   "pytest-random-order",
+  "pytest-timeout",
+  "pytest-xdist",
   "pytest",
   "ruff",
   "time-machine",