diff --git a/requirements.txt b/requirements.txt
index ac8ccd0..4c0c532 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
+cssselect==1.3.0
 Django==6.0
 django-stubs==5.2.8
 django-stubs-ext==5.2.8