diff --git a/package-lock.json b/package-lock.json
index 78ba3af..bc6735a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -20,7 +20,7 @@
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@@ -67,6 +67,7 @@
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@@ -1861,529 +1862,12 @@
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diff --git a/package.json b/package.json
index 9002e81..ecd1af8 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
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     "@babel/plugin-proposal-decorators": "^7.25.9",
     "@ember/optional-features": "^2.2.0",
-    "@ember/string": "^3.1.1",
+    "@ember/string": "^4.0.0",
     "@ember/test-helpers": "^4.0.4",
     "@embroider/test-setup": "^4.0.0",
     "@eslint/js": "^9.14.0",
@@ -95,7 +95,8 @@
     "webpack": "^5.96.1"
   },
   "peerDependencies": {
-    "ember-source": ">= 3.20.0"
+    "ember-source": ">= 3.20.0",
+    "@ember/string": "^3.0.0 || ^4.0.0"
   },
   "engines": {
     "node": "12.* || 14.* || >= 16"