diff --git a/ember-slugify/package.json b/ember-slugify/package.json
index e7769ce..f0a58ea 100644
--- a/ember-slugify/package.json
+++ b/ember-slugify/package.json
@@ -48,6 +48,7 @@
     "@babel/plugin-proposal-class-properties": "^7.18.6",
     "@babel/plugin-proposal-decorators": "^7.21.0",
     "@embroider/addon-dev": "^3.0.0",
+    "@ember/string": "^3.1.1",
     "@rollup/plugin-babel": "^6.0.3",
     "eslint": "^8.16.0",
     "eslint-config-prettier": "^8.8.0",
diff --git a/test-app/config/ember-try.js b/test-app/config/ember-try.js
index 5b0fbca..811c04f 100644
--- a/test-app/config/ember-try.js
+++ b/test-app/config/ember-try.js
@@ -71,7 +71,14 @@ module.exports = async function () {
           },
         },
       },
-      embroiderSafe(),
+      {
+        ...embroiderSafe(),
+        npm: {
+          devDependencies: {
+            '@ember/string': '^3.1.1',
+          },
+        },
+      },
       embroiderOptimized(),
     ],
   }
diff --git a/yarn.lock b/yarn.lock
index ee0edac..52e6694 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1088,6 +1088,13 @@
     mkdirp "^1.0.4"
     silent-error "^1.1.1"
 
+"@ember/string@^3.1.1":
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/@ember/string/-/string-3.1.1.tgz#0a5ac0d1e4925259e41d5c8d55ef616117d47ff0"
+  integrity sha512-UbXJ+k3QOrYN4SRPHgXCqYIJ+yWWUg1+vr0H4DhdQPTy8LJfyqwZ2tc5uqpSSnEXE+/1KopHBE5J8GDagAg5cg==
+  dependencies:
+    ember-cli-babel "^7.26.6"
+
 "@ember/test-helpers@^2.8.1":
   version "2.9.3"
   resolved "https://registry.yarnpkg.com/@ember/test-helpers/-/test-helpers-2.9.3.tgz#c2a9d6ab1c367af92cf1a334f97eb19b8e06e6e1"