diff --git a/package.json b/package.json
index 407f9d9..6b9ad30 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,10 @@
         "build": "gulp default",
         "watch": "gulp watch"
     },
+    "engines": {
+        "npm": "6.12.*",
+        "node": "12.*"
+    },
     "dependencies": {
         "bootstrap": "^4.3.1",
         "gulp": "^4.0.2",