diff --git a/package.json b/package.json
index 9fa7571..3633d2d 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
   "devDependencies": {
     "@angular/cli": "1.7.1",
     "@angular/compiler-cli": "^5.2.6",
-    "@angular/language-service": "^5.2.6",
+    "@angular/language-service": "^6.0.0",
     "@types/body-parser": "^1.16.8",
     "@types/chai": "^4.1.2",
     "@types/chai-http": "^3.0.4",