diff --git a/web/themes/custom/agarica/agarica.info.yml b/web/themes/custom/agarica/agarica.info.yml
index d1047de..037d651 100644
--- a/web/themes/custom/agarica/agarica.info.yml
+++ b/web/themes/custom/agarica/agarica.info.yml
@@ -3,7 +3,7 @@ description: An Octavia-based subtheme.
 type: theme
 base theme: octavia
 package: Custom
-core: 8.x
+core_version_requirement: ^8 || ^9
 
 regions:
   header: 'Header'