diff --git a/ember-can/package.json b/ember-can/package.json
index 8085732..2c106dc 100644
--- a/ember-can/package.json
+++ b/ember-can/package.json
@@ -126,6 +126,6 @@
   },
   "peerDependencies": {
     "@ember/string": "^3.1.1",
-    "ember-source": "^3.20.0 || ^4.0.0 || >=5.0.0"
+    "ember-source": "^3.28.0 || ^4.0.0 || >=5.0.0"
   }
 }