diff --git a/.changeset/tall-rats-hunt.md b/.changeset/tall-rats-hunt.md
new file mode 100644
index 000000000..e14a7f6e0
--- /dev/null
+++ b/.changeset/tall-rats-hunt.md
@@ -0,0 +1,6 @@
+---
+'@hyperdx/api': patch
+'@hyperdx/app': patch
+---
+
+perf: add index for pulling alert histories (GET alerts endpoint)
diff --git a/packages/api/src/models/alertHistory.ts b/packages/api/src/models/alertHistory.ts
index c9c57299d..2b17566cc 100644
--- a/packages/api/src/models/alertHistory.ts
+++ b/packages/api/src/models/alertHistory.ts
@@ -47,6 +47,8 @@ AlertHistorySchema.index(
   { expireAfterSeconds: ms('30d') / 1000 },
 );
 
+AlertHistorySchema.index({ alert: 1, createdAt: -1 });
+
 export default mongoose.model<IAlertHistory>(
   'AlertHistory',
   AlertHistorySchema,