diff --git a/package.json b/package.json
index f42450a..62d8a2a 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "popper": "^1.0.1",
     "rxjs": "~6.6.0",
     "tslib": "^2.3.0",
-    "zone.js": "~0.11.4"
+    "zone.js": "~0.11.4",
     "chart.js": "^2.9.3"
   },
   "devDependencies": {