diff --git a/requirements.txt b/requirements.txt
index 78e6f58..b9c70f9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -78,7 +78,7 @@ bandit==1.9.3
 entrypoints==0.4
 
 webencodings==0.5.1 # django-markdownify
-tinycss2==1.4.0 # django-markdownify
+tinycss2==1.5.1 # django-markdownify
 bleach==6.3.0 # django-markdownify
 django-markdownify==0.9.6