diff --git a/sitewide_alert.info.yml b/sitewide_alert.info.yml
index 36c89e7..363e36d 100644
--- a/sitewide_alert.info.yml
+++ b/sitewide_alert.info.yml
@@ -2,6 +2,7 @@ name: 'Sitewide Alert'
 type: module
 description: 'Provides ability to display an alert message at the top of all pages.'
 core: 8.x
+core_version_requirement: ^8 || ^9
 package: 'Other'
 configure: sitewide_alert.sitewide_alert_config_form
 dependencies: