diff --git a/requirements.txt b/requirements.txt
index 88dc97e..b3c1270 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -45,7 +45,7 @@ ply==3.11
 pycparser==2.21
 pydyf==0.7.0
 Pygments==2.16.1
-pymdown-extensions==10.3
+pymdown-extensions==10.21.3
 pyparsing==3.1.1
 pyphen==0.14.0
 python-dateutil==2.8.2