diff --git a/package.json b/package.json
index 34a62c6..3cbe9dd 100644
--- a/package.json
+++ b/package.json
@@ -111,7 +111,7 @@
     "ember-load-initializers": "2.1.2",
     "ember-qunit": "5.1.5",
     "ember-resolver": "8.0.3",
-    "ember-source": "3.28.11",
+    "ember-source": "4.9.3",
     "ember-source-channel-url": "3.0.0",
     "ember-template-lint": "4.18.2",
     "ember-try": "2.0.0",