diff --git a/python-Sphinx.spec b/python-Sphinx.spec
index 0dc2565..864e400 100644
--- a/python-Sphinx.spec
+++ b/python-Sphinx.spec
@@ -55,6 +55,7 @@ Requires:       python-Babel >= 1.3
 Requires:       python-Jinja2 >= 2.3
 Requires:       python-Pygments >= 2.14
 Requires:       python-alabaster >= 0.7
+Requires:       python-defusedxml >= 0.7.1
 Requires:       python-docutils >= 0.12
 Requires:       python-imagesize
 Requires:       python-packaging