diff --git a/docs/requirements.txt b/docs/requirements.txt
index 917e4fac..a50577c4 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,5 +1,5 @@
 ford
-markdown==3.5
+markdown==3.8.1
 mkdocs==1.5.3
 mkdocs-glightbox==0.3.4
 mkdocs-material==9.4.6