diff --git a/requirements.txt b/requirements.txt
index 0c5a2f77fa..71f2e306a1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ cssselect==1.1.0
     # via
     #   premailer
     #   pyquery
-cssutils==1.0.2
+cssutils==2.4.0
     # via premailer
 db-dtypes==0.3.1
     # via pandas-gbq