diff --git a/requirements.txt b/requirements.txt
index 76b5fb1..6bf0eb4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ markdown==3.8.1
 mkdocs-material==9.7.6
 
 # Markdown extensions
-pymdown-extensions==10.16.1
+pymdown-extensions==10.21.2
 
 # MkDocs plugins
 mkdocs-meta-descriptions-plugin==3.0.0