diff --git a/server/src/routes/issues.ts b/server/src/routes/issues.ts
index 8e398afc..9c91fec4 100644
--- a/server/src/routes/issues.ts
+++ b/server/src/routes/issues.ts
@@ -222,6 +222,7 @@ export function issueRoutes(db: Db, storage: StorageService) {
       touchedByUserId,
       unreadForUserId,
       projectId: req.query.projectId as string | undefined,
+      parentId: req.query.parentId as string | undefined,
       labelId: req.query.labelId as string | undefined,
       q: req.query.q as string | undefined,
     });
diff --git a/server/src/services/issues.ts b/server/src/services/issues.ts
index cb258e23..8f34be18 100644
--- a/server/src/services/issues.ts
+++ b/server/src/services/issues.ts
@@ -53,6 +53,7 @@ export interface IssueFilters {
   touchedByUserId?: string;
   unreadForUserId?: string;
   projectId?: string;
+  parentId?: string;
   labelId?: string;
   q?: string;
 }
@@ -458,6 +459,7 @@ export function issueService(db: Db) {
         conditions.push(unreadForUserCondition(companyId, unreadForUserId));
       }
       if (filters?.projectId) conditions.push(eq(issues.projectId, filters.projectId));
+      if (filters?.parentId) conditions.push(eq(issues.parentId, filters.parentId));
       if (filters?.labelId) {
         const labeledIssueIds = await db
           .select({ issueId: issueLabels.issueId })