diff --git a/requirements-dev.txt b/requirements-dev.txt
index 03d3df2..b9e1b0a 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -6,7 +6,7 @@ mkdocs-autorefs>=1.2.0
 mkdocstrings>=0.26.1
 mkdocs-material-extensions>=1.3.1
 mkdocs-get-deps>=0.2.0
-pymdown-extensions>=10.9
+pymdown-extensions>=10.21.2
 
 # Linting extras
 darglint>=1.8.1