diff --git a/pyproject.toml b/pyproject.toml
index 6eb93be..c7c94b0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,7 +72,7 @@ mss = "mss.__main__:main"
 [project.optional-dependencies]
 dev = [
   "build==1.4.3",
-  "lxml==6.0.2",
+  "lxml==6.0.4",
   "mypy==1.19.1",
   "ruff==0.15.10",
   "twine==6.2.0",