diff --git a/docs/requirements.txt b/docs/requirements.txt
index 51099aca7..b737bdca9 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -6,6 +6,6 @@ mkdocs-git-revision-date-localized-plugin==1.5.*
 mkdocs-git-authors-plugin==0.10.*
 mkdocs-gitbook==0.0.1
 mkdocs-glightbox==0.5.*
-pymdown-extensions==10.20.*
+pymdown-extensions==10.21.*
 mkdocstrings[python]==1.0.*
 mistune==3.2.0