diff --git a/package.json b/package.json
index 03ed3f8..edc9d7d 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "ember-maybe-import-regenerator": "^0.1.6",
     "ember-qunit": "^4.6.0",
     "ember-resolver": "^8.0.2",
-    "ember-source": "~3.21.1",
+    "ember-source": "~3.28.0",
     "ember-source-channel-url": "^3.0.0",
     "ember-template-lint": "^2.11.0",
     "ember-test-selectors": "^5.0.0",