diff --git a/requirements.txt b/requirements.txt
index 8d3be978..cf6bda7a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -93,6 +93,6 @@ future==1.0.0
 
 backports.zoneinfo;python_version<"3.9"
 webencodings==0.5.1 # django-markdownify
-tinycss2==1.3.0 # django-markdownify
+tinycss2==1.4.0 # django-markdownify
 bleach==6.1.0 # django-markdownify
 django-markdownify==0.9.5