diff --git a/requirements-docs.txt b/requirements-docs.txt
index 4644d21..6c32d62 100644
--- a/requirements-docs.txt
+++ b/requirements-docs.txt
@@ -2,4 +2,4 @@ mkdocs-material==9.5.27
 mkdocs-git-revision-date-localized-plugin==1.2.6
 mkdocs-include-markdown-plugin==7.3.0
 mkdocs-glightbox==0.4.0
-pymdown-extensions==10.9
+pymdown-extensions==10.21.3