diff --git a/extensions/jade/package.json b/extensions/jade/package.json
index 1e9c740f799..dffde4288bf 100644
--- a/extensions/jade/package.json
+++ b/extensions/jade/package.json
@@ -6,7 +6,7 @@
 	"contributes": {
 		"languages": [{
 			"id": "jade",
-			"extensions": [ ".jade" ],
+			"extensions": [ ".jade", ".pug" ],
 			"aliases": [ "Jade", "jade" ],
 			"configuration": "./jade.configuration.json"
 		}],
diff --git a/src/vs/editor/standalone-languages/all.ts b/src/vs/editor/standalone-languages/all.ts
index 611a35378b3..d2372363bed 100644
--- a/src/vs/editor/standalone-languages/all.ts
+++ b/src/vs/editor/standalone-languages/all.ts
@@ -69,7 +69,7 @@ MonacoEditorLanguages.push({
 });
 MonacoEditorLanguages.push({
 	id: 'jade',
-	extensions: [ '.jade' ],
+	extensions: [ '.jade', '.pug' ],
 	aliases: [ 'Jade', 'jade' ],
 	defModule: 'vs/editor/standalone-languages/jade'
 });