diff --git a/pyproject.toml b/pyproject.toml
index 764eee9..15ba402 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -56,6 +56,8 @@ dev = [
     "masque[text]",
     "masque[manhattanize]",
     "masque[manhattanize_slow]",
+    "ruff>=0.15.1",
+    "mypy>=1.19.1",
 ]
 
 [tool.hatch.version]