diff --git a/test_reqs.txt b/test_reqs.txt
index 6d03f60..50bcae5 100644
--- a/test_reqs.txt
+++ b/test_reqs.txt
@@ -19,4 +19,4 @@ Markdown==3.7
 django-markdownify==0.9.5
 bleach==6.1.0
 webencodings==0.5.1
-tinycss2==1.3.0  # django-markdownify
+tinycss2==1.4.0  # django-markdownify