diff --git a/ui/src/types/packages.ts b/ui/src/types/packages.ts
index 21044f5..9545288 100644
--- a/ui/src/types/packages.ts
+++ b/ui/src/types/packages.ts
@@ -18,6 +18,9 @@ export interface PackageVersion {
   changelog: ChangelogEntry[];
   channel: Channel;
   baseUrl: string;
+  // Fedora releasever ("43", "44", ...) — attached at fetch time from the
+  // tree each manifest was loaded from (manifests are per-releasever).
+  releasever: string;
 }
 
 export interface PackagesManifest {