diff --git a/requirements.txt b/requirements.txt
index cac717cb..ce2e5105 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ paginate==0.5.6
 pathspec==0.11.2
 platformdirs==3.10.0
 Pygments==2.16.1
-pymdown-extensions==10.3
+pymdown-extensions==10.21.3
 python-dateutil==2.8.2
 pytz==2023.3
 PyYAML==6.0.1