diff --git a/package.json b/package.json
index 98f4537e..64ace3e1 100644
--- a/package.json
+++ b/package.json
@@ -132,7 +132,8 @@
     "webpack": "^5.89.0"
   },
   "peerDependencies": {
-    "@ember/string": "^3.0.1"
+    "@ember/string": "^3.0.1",
+    "ember-source": ">= 4.12.0"
   },
   "engines": {
     "node": "18.* || >= 20"