diff --git a/pyproject.toml b/pyproject.toml
index 07eb9bcd..cd69e8f0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ classifiers = [
 ]
 dependencies = [
     "numpy <= 2.2.2",
-    "lxml <= 5.3.0",
+    "lxml <= 5.3.1",
     "pooch <= v1.8.2",
     "importlib-resources; python_version <= '3.8'",
     "importlib-metadata; python_version <= '3.8'"