diff --git a/css/selectors/WEB_FEATURES.yml b/css/selectors/WEB_FEATURES.yml
index 2449bf4808f60c..a674f92e29ca70 100644
--- a/css/selectors/WEB_FEATURES.yml
+++ b/css/selectors/WEB_FEATURES.yml
@@ -8,6 +8,9 @@ features:
 - name: read-write-pseudos
   files:
   - selector-read-write-*
+- name: modal
+  files:
+  - modal-pseudo-class.html
 - name: user-pseudos
   files:
   - user-invalid.html
diff --git a/css/selectors/invalidation/WEB_FEATURES.yml b/css/selectors/invalidation/WEB_FEATURES.yml
index 5e6a6d0d5c0c3f..1f80a7755b3dbc 100644
--- a/css/selectors/invalidation/WEB_FEATURES.yml
+++ b/css/selectors/invalidation/WEB_FEATURES.yml
@@ -4,6 +4,9 @@ features:
   - has-*
   - "*-in-has.*"
   - "*-in-has-*"
+- name: modal
+  files:
+  - modal-pseudo-class-in-has.html
 - name: user-pseudos
   files:
   - user-valid-user-invalid.html