diff --git a/setup.py b/setup.py
index af5f2b3..f106352 100644
--- a/setup.py
+++ b/setup.py
@@ -60,7 +60,7 @@ def run(self):
           "Swoop" : ["Swoop/Swoop.py.jinja", "Swoop/eagle.dtd.diff", "Swoop/*.dtd", "Swoop/default.dru"]
       },
       #ext_modules = cythonize([Extension("*", ["Swoop/Swoop.pyx"], extra_compile_args=["-O4"])]),
-      install_requires=["lxml==3.6.2",  "Sphinx>=1.3.1","Jinja2>=2.7.3", "shapely>=1.5.13"],
+      install_requires=["lxml==4.3.2",  "Sphinx>=1.3.1","Jinja2>=2.7.3", "shapely>=1.5.13"],
       setup_requires=["Jinja2>=2.7.3"],#, "lxml>=3.4.2"],
       include_package_data=True,
       entry_points={