1 files changed, 1 insertions, 0 deletions
diff --git a/setup.py b/setup.py
index f30380a3..06645e69 100755
--- a/setup.py
+++ b/setup.py
@@ -87,6 +87,7 @@ setup(
     extras_require={
         'XEP-0363': ['aiohttp'],
         'XEP-0444 compliance': ['emoji'],
+        'Safer XML parsing': ['defusedxml'],
     },
     classifiers=CLASSIFIERS,
     cmdclass={'test': TestCommand}