diff --git a/requirements.txt b/requirements.txt
index d88785c1..c077c257 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -125,6 +125,6 @@ django-cas-ng==5.0.0
 
 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