diff --git a/lib/modules/datasource/github-release-attachments/index.ts b/lib/modules/datasource/github-release-attachments/index.ts
index da41d74df4051251766c2853850785bdb70e2445..7baec70eea35000cad12929df8394f9dca7cbd78 100644
--- a/lib/modules/datasource/github-release-attachments/index.ts
+++ b/lib/modules/datasource/github-release-attachments/index.ts
@@ -53,7 +53,7 @@ export class GithubReleaseAttachmentsDatasource extends Datasource {
 
   @cache({
     ttlMinutes: 1440,
-    namespace: 'datasource-github-releases',
+    namespace: `datasource-${GithubReleaseAttachmentsDatasource.id}`,
     key: (release: GithubRestRelease, digest: string) =>
       `${release.html_url}:${digest}`,
   })
diff --git a/lib/util/cache/package/types.ts b/lib/util/cache/package/types.ts
index 6e5fc1866e0ae362ece0e1a4093f94b059a05cc9..0e7524b71debede13b86011bb80a36e10e971652 100644
--- a/lib/util/cache/package/types.ts
+++ b/lib/util/cache/package/types.ts
@@ -64,6 +64,7 @@ export type PackageCacheNamespace =
   | 'datasource-gitea-releases'
   | 'datasource-gitea-tags'
   | 'datasource-github-releases'
+  | 'datasource-github-release-attachments'
   | 'datasource-gitlab-packages'
   | 'datasource-gitlab-releases'
   | 'datasource-gitlab-tags-commit'