diff --git a/requirements.in b/requirements.in
index baa2683..b59210f 100644
--- a/requirements.in
+++ b/requirements.in
@@ -1,2 +1,2 @@
 pyspelling==2.12.1
-pymdown-extensions==11.0.1
+pymdown-extensions==12.1
diff --git a/requirements.txt b/requirements.txt
index c9c80cd..2506c74 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ markdown==3.8.1
     # via
     #   pymdown-extensions
     #   pyspelling
-pymdown-extensions==11.0.1
+pymdown-extensions==12.1
     # via -r requirements.in
 pyspelling==2.12.1
     # via -r requirements.in