diff --git a/prisma/migrations/20260512110000_add_resource_created_member_index/migration.sql b/prisma/migrations/20260512110000_add_resource_created_member_index/migration.sql
new file mode 100644
index 0000000..fcb22f6
--- /dev/null
+++ b/prisma/migrations/20260512110000_add_resource_created_member_index/migration.sql
@@ -0,0 +1,2 @@
+-- CreateIndex
+CREATE INDEX idx_resource_created_member ON resources."Resource"("createdAt" DESC, "memberId");
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index c26ba55..3d0469d 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -56,6 +56,7 @@ model Resource {
   @@index([memberId, roleId], map: "resource-memberIdRoleId-index")
   @@index([roleId], map: "resource-roleId-index")
   @@index([memberId, challengeId], map: "resource-memberIdChallengeId-index")
+  @@index([createdAt(sort: Desc), memberId], map: "idx_resource_created_member")
 }
 
 model ResourceRolePhaseDependency {