diff --git a/back/package.json b/back/package.json
index b354324..65324b4 100644
--- a/back/package.json
+++ b/back/package.json
@@ -25,8 +25,9 @@
     "uuid": "b0fa2552-2961-4886-8673-c2d7fe07b8a1"
   },
   "engines": {
-    "node": ">=12.x.x <=16.x.x",
-    "npm": ">=6.0.0"
+    "node": "16.x.x",
+    "npm": "please-use-yarn",
+    "yarn": ">=1.22.0"
   },
   "license": "MIT"
 }