diff --git a/requirements.txt b/requirements.txt
index af90520..f13e8b8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -79,7 +79,7 @@ setuptools==69.2.0
 six==1.16.0
 soupsieve==2.5
 stack-data==0.6.3
-tinycss2==1.2.1
+tinycss2==1.3.0
 tornado==6.4
 traitlets==5.14.3
 wakepy==0.7.2