diff --git a/pyproject.toml b/pyproject.toml
index 3971eb9..01aac04 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,6 +48,7 @@ dev = [
   "pytest>=9.0.1",
   "pytest-asyncio>=1.3.0",
   "pytest-cov>=7.0.0",
+  "pytest-deadfixtures>=3.1.0",
   "pytest-sugar>=1.1.1",
   "pytest-textual-snapshot>=1.0.0",
   "textual-dev>=1.8.0",