diff --git a/.server-changes/batch-list-created-at-index.md b/.server-changes/batch-list-created-at-index.md
new file mode 100644
index 0000000000..b5a2438661
--- /dev/null
+++ b/.server-changes/batch-list-created-at-index.md
@@ -0,0 +1,6 @@
+---
+area: webapp
+type: fix
+---
+
+Speed up the Batches list page for environments with a large number of batches, which could previously time out while loading.
diff --git a/internal-packages/database/prisma/migrations/20260724120000_add_batch_task_run_created_at_dashboard_index/migration.sql b/internal-packages/database/prisma/migrations/20260724120000_add_batch_task_run_created_at_dashboard_index/migration.sql
new file mode 100644
index 0000000000..4ff6ed34bc
--- /dev/null
+++ b/internal-packages/database/prisma/migrations/20260724120000_add_batch_task_run_created_at_dashboard_index/migration.sql
@@ -0,0 +1,2 @@
+-- CreateIndex
+CREATE INDEX CONCURRENTLY IF NOT EXISTS "BatchTaskRun_runtimeEnvironmentId_createdAt_id_idx" ON "public"."BatchTaskRun"("runtimeEnvironmentId", "createdAt" DESC, "id" DESC);
diff --git a/internal-packages/database/prisma/schema.prisma b/internal-packages/database/prisma/schema.prisma
index 2800dd5dd2..7d6f4ac549 100644
--- a/internal-packages/database/prisma/schema.prisma
+++ b/internal-packages/database/prisma/schema.prisma
@@ -1935,6 +1935,7 @@ model BatchTaskRun {
   @@index([dependentTaskAttemptId])
   // This is for the batch list dashboard page
   @@index([runtimeEnvironmentId, id(sort: Desc)])
+  @@index([runtimeEnvironmentId, createdAt(sort: Desc), id(sort: Desc)])
 }
 
 enum BatchTaskRunStatus {