diff --git a/setup.py b/setup.py
index 3fba844ea..6aa3a2b6c 100644
--- a/setup.py
+++ b/setup.py
@@ -251,7 +251,7 @@ def path_to_src(source_path_list):
        package_dir = {"": src_dir},
        packages = ["PyPop", "PyPop.xslt"],
        package_data={"PyPop.xslt": data_file_paths},
-       install_requires = ["numpy <= 1.26.2", "lxml <= 4.9.3",
+       install_requires = ["numpy <= 1.26.2", "lxml <= 4.9.4",
                            "importlib-resources; python_version <= '3.8'", "importlib-metadata; python_version <= '3.8'"],
        extras_require={
            "test": ['pytest']