diff --git a/db/docs/epic_issues.yml b/db/docs/epic_issues.yml
index 5a79385e5f2e939e3802eaa5a02bbf920d17d77b..27543ca0b3f37b20b6fe9c98647582078aa6064d 100644
--- a/db/docs/epic_issues.yml
+++ b/db/docs/epic_issues.yml
@@ -7,4 +7,19 @@ feature_categories:
 description: The relationships between Epics and Issues
 introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/3302
 milestone: '10.2'
-gitlab_schema: gitlab_main
+gitlab_schema: gitlab_main_cell
+allow_cross_joins:
+- gitlab_main_clusterwide
+allow_cross_transactions:
+- gitlab_main_clusterwide
+allow_cross_foreign_keys:
+- gitlab_main_clusterwide
+desired_sharding_key:
+  namespace_id:
+    references: namespaces
+    backfill_via:
+      parent:
+        foreign_key: issue_id
+        table: issues
+        sharding_key: namespace_id
+        belongs_to: issue