diff --git a/package.json b/package.json
index 24686f7..1995764 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
   "devDependencies": {
     "@angular/cli": "1.2.4",
     "@angular/compiler-cli": "^4.0.0",
-    "@angular/language-service": "^4.0.0",
+    "@angular/language-service": "^5.0.0",
     "@types/jasmine": "2.5.53",
     "@types/node": "~8.0.13",
     "angular-cli-ghpages": "^0.5.1",