diff --git a/src/package.ts b/src/package.ts
index b0b95ea3..f7e65e8e 100644
--- a/src/package.ts
+++ b/src/package.ts
@@ -676,6 +676,7 @@ export class TagsProcessor extends BaseProcessor {
 		const json = doesContribute('jsonValidation') ? ['json'] : [];
 		const remoteMenu = doesContribute('menus', 'statusBar/remoteIndicator') ? ['remote-menu'] : [];
 		const chatParticipants = doesContribute('chatParticipants') ? ['chat-participant'] : [];
+		const copilot = doesContribute('chatParticipants') ? ['copilot'] : [];
 
 		const localizationContributions = ((contributes && contributes['localizations']) ?? []).reduce<string[]>(
 			(r, l) => [...r, `lp-${l.languageId}`, ...toLanguagePackTags(l.translations, l.languageId)],
@@ -717,6 +718,7 @@ export class TagsProcessor extends BaseProcessor {
 			...json,
 			...remoteMenu,
 			...chatParticipants,
+			...copilot,
 			...localizationContributions,
 			...languageContributions,
 			...languageActivations,
diff --git a/src/test/package.test.ts b/src/test/package.test.ts
index ba18dac3..e020e0a6 100644
--- a/src/test/package.test.ts
+++ b/src/test/package.test.ts
@@ -1332,7 +1332,7 @@ describe('toVsixManifest', () => {
 			.then(result => assert.deepEqual(result.PackageManifest.Metadata[0].Tags[0], 'snippet,__web_extension'));
 	});
 
-	it('should automatically add chatParticipant tag', () => {
+	it('should automatically add chatParticipant and copilot tag', () => {
 		const manifest = {
 			name: 'test',
 			publisher: 'mocha',
@@ -1345,7 +1345,7 @@ describe('toVsixManifest', () => {
 
 		return _toVsixManifest(manifest, [])
 			.then(parseXmlManifest)
-			.then(result => assert.deepEqual(result.PackageManifest.Metadata[0].Tags[0], 'chat-participant,__web_extension'));
+			.then(result => assert.deepEqual(result.PackageManifest.Metadata[0].Tags[0], 'chat-participant,copilot,__web_extension'));
 	});
 
 	it('should remove duplicate tags', () => {