diff --git a/magazineplus.info.yml b/magazineplus.info.yml
index f4c81c9..8f48e1e 100644
--- a/magazineplus.info.yml
+++ b/magazineplus.info.yml
@@ -2,7 +2,8 @@ name: Magazine+
 type: theme
 base theme: classy
 description: 'A flexible, recolorable theme with many regions and a responsive, mobile-first layout.'
-version: '8.x-5.5.1'
+#version: '8.x-5.5.1'
+core_version_requirement: ^8 || ^9
 core: 8.x
 libraries:
   - magazineplus/bootstrap