diff --git a/.changeset/lucky-singers-worry.md b/.changeset/lucky-singers-worry.md
new file mode 100644
index 0000000000..abefe2bea2
--- /dev/null
+++ b/.changeset/lucky-singers-worry.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-catalog-backend': patch
+---
+
+Track the last time the final entity changed with new timestamp "last updated at" data in final entities database, which gets updated with the time when final entity is updated.
diff --git a/plugins/catalog-backend/migrations/20221201085245_add_last_updated_at_in_final_entities.js b/plugins/catalog-backend/migrations/20221201085245_add_last_updated_at_in_final_entities.js
new file mode 100644
index 0000000000..44fcf30ba4
--- /dev/null
+++ b/plugins/catalog-backend/migrations/20221201085245_add_last_updated_at_in_final_entities.js
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2022 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// @ts-check
+
+/**
+ * @param { import("knex").Knex } knex
+ */
+exports.up = async function up(knex) {
+  await knex.schema.table('final_entities', table => {
+    table
+      .dateTime('last_updated_at')
+      .nullable()
+      .comment('The time when final_entity changed');
+  });
+};
+
+/**
+ * @param { import("knex").Knex } knex
+ * @returns { Promise<void> }
+ */
+exports.down = async function down(knex) {
+  await knex.schema.table('final_entities', table => {
+    table.dropColumn('last_updated_at');
+  });
+};
diff --git a/plugins/catalog-backend/src/database/tables.ts b/plugins/catalog-backend/src/database/tables.ts
index c23753b267..e3f3efd1bb 100644
--- a/plugins/catalog-backend/src/database/tables.ts
+++ b/plugins/catalog-backend/src/database/tables.ts
@@ -66,6 +66,7 @@ export type DbFinalEntitiesRow = {
   hash: string;
   stitch_ticket: string;
   final_entity?: string;
+  last_updated_at?: string | Date;
 };
 
 export type DbSearchRow = {
diff --git a/plugins/catalog-backend/src/migrations.test.ts b/plugins/catalog-backend/src/migrations.test.ts
index 9d9b02fa82..f1ed40dbbe 100644
--- a/plugins/catalog-backend/src/migrations.test.ts
+++ b/plugins/catalog-backend/src/migrations.test.ts
@@ -100,4 +100,82 @@ describe('migrations', () => {
     },
     60_000,
   );
+
+  it.each(databases.eachSupportedId())(
+    '20221201085245_add_last_updated_at_in_final_entities.js, %p',
+    async databaseId => {
+      const knex = await databases.init(databaseId);
+
+      await migrateUntilBefore(
+        knex,
+        '20221201085245_add_last_updated_at_in_final_entities.js',
+      );
+
+      await knex
+        .insert([
+          {
+            entity_id: 'my-id',
+            entity_ref: 'k:ns/n',
+            unprocessed_entity: JSON.stringify({}),
+            processed_entity: JSON.stringify({
+              apiVersion: 'a',
+              kind: 'k',
+              metadata: {
+                name: 'n',
+                namespace: 'ns',
+              },
+              spec: {
+                k: 'v',
+              },
+            }),
+            errors: '[]',
+            next_update_at: knex.fn.now(),
+            last_discovery_at: knex.fn.now(),
+          },
+        ])
+        .into('refresh_state');
+
+      await knex
+        .insert({
+          entity_id: 'my-id',
+          hash: 'd1c0c56d5fea4238e4c091d9dde4cb42d05a6b7e',
+          stitch_ticket: '52367ed7-120b-405f-b7e0-cdd90f956312',
+          final_entity:
+            '{"apiVersion":"a","kind":"k","metadata":{"name":"n","namespace":"ns","uid":"my-id","etag":"d1c0c56d5fea4238e4c091d9dde4cb42d05a6b7e"},"spec":{"k":"v"},"relations":[{"type":"looksAt","targetRef":"k:ns/other"}]}',
+        })
+        .into('final_entities');
+
+      await migrateUpOnce(knex);
+
+      await expect(knex('final_entities')).resolves.toEqual(
+        expect.arrayContaining([
+          {
+            entity_id: 'my-id',
+            hash: 'd1c0c56d5fea4238e4c091d9dde4cb42d05a6b7e',
+            stitch_ticket: '52367ed7-120b-405f-b7e0-cdd90f956312',
+            final_entity:
+              '{"apiVersion":"a","kind":"k","metadata":{"name":"n","namespace":"ns","uid":"my-id","etag":"d1c0c56d5fea4238e4c091d9dde4cb42d05a6b7e"},"spec":{"k":"v"},"relations":[{"type":"looksAt","targetRef":"k:ns/other"}]}',
+            last_updated_at: null,
+          },
+        ]),
+      );
+
+      await migrateDownOnce(knex);
+
+      await expect(knex('final_entities')).resolves.toEqual(
+        expect.arrayContaining([
+          {
+            entity_id: 'my-id',
+            hash: 'd1c0c56d5fea4238e4c091d9dde4cb42d05a6b7e',
+            stitch_ticket: '52367ed7-120b-405f-b7e0-cdd90f956312',
+            final_entity:
+              '{"apiVersion":"a","kind":"k","metadata":{"name":"n","namespace":"ns","uid":"my-id","etag":"d1c0c56d5fea4238e4c091d9dde4cb42d05a6b7e"},"spec":{"k":"v"},"relations":[{"type":"looksAt","targetRef":"k:ns/other"}]}',
+          },
+        ]),
+      );
+
+      await knex.destroy();
+    },
+    60_000,
+  );
 });
diff --git a/plugins/catalog-backend/src/stitching/Stitcher.test.ts b/plugins/catalog-backend/src/stitching/Stitcher.test.ts
index a3657e45fd..729793a8d7 100644
--- a/plugins/catalog-backend/src/stitching/Stitcher.test.ts
+++ b/plugins/catalog-backend/src/stitching/Stitcher.test.ts
@@ -110,6 +110,8 @@ describe('Stitcher', () => {
       });
 
       expect(entity.metadata.etag).toEqual(entities[0].hash);
+      const last_updated_at = entities[0].last_updated_at;
+      expect(last_updated_at).not.toBeNull();
       const firstHash = entities[0].hash;
 
       const search = await db<DbSearchRow>('search');
@@ -127,7 +129,12 @@ describe('Stitcher', () => {
             original_value: 'a',
             value: 'a',
           },
-          { entity_id: 'my-id', key: 'kind', original_value: 'k', value: 'k' },
+          {
+            entity_id: 'my-id',
+            key: 'kind',
+            original_value: 'k',
+            value: 'k',
+          },
           {
             entity_id: 'my-id',
             key: 'metadata.name',
@@ -227,7 +234,12 @@ describe('Stitcher', () => {
             original_value: 'a',
             value: 'a',
           },
-          { entity_id: 'my-id', key: 'kind', original_value: 'k', value: 'k' },
+          {
+            entity_id: 'my-id',
+            key: 'kind',
+            original_value: 'k',
+            value: 'k',
+          },
           {
             entity_id: 'my-id',
             key: 'metadata.name',
diff --git a/plugins/catalog-backend/src/stitching/Stitcher.ts b/plugins/catalog-backend/src/stitching/Stitcher.ts
index 0da8e39694..4742c81933 100644
--- a/plugins/catalog-backend/src/stitching/Stitcher.ts
+++ b/plugins/catalog-backend/src/stitching/Stitcher.ts
@@ -207,11 +207,12 @@ export class Stitcher {
       .update({
         final_entity: JSON.stringify(entity),
         hash,
+        last_updated_at: this.database.fn.now(),
       })
       .where('entity_id', entityId)
       .where('stitch_ticket', ticket)
       .onConflict('entity_id')
-      .merge(['final_entity', 'hash']);
+      .merge(['final_entity', 'hash', 'last_updated_at']);
 
     if (amountOfRowsChanged === 0) {
       this.logger.debug(