diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index ad1af1d..c60a711 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -162,8 +162,8 @@ importers:
         specifier: ^4.0.0
         version: 4.0.0
       '@ember/test-helpers':
-        specifier: ^3.3.0
-        version: 3.3.0(@glint/template@1.5.0)(ember-source@5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1))(webpack@5.92.1)
+        specifier: ^4.0.4
+        version: 4.0.4(@babel/core@7.26.0)(@glint/template@1.5.0)(ember-source@5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1))
       '@embroider/test-setup':
         specifier: ^4.0.0
         version: 4.0.0(@embroider/core@3.4.14(@glint/template@1.5.0))
@@ -250,7 +250,7 @@ importers:
         version: 8.2.3(ember-source@5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1))
       ember-qunit:
         specifier: ^8.1.0
-        version: 8.1.0(@ember/test-helpers@3.3.0(@glint/template@1.5.0)(ember-source@5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1))(webpack@5.92.1))(@glint/template@1.5.0)(ember-source@5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1))(qunit@2.22.0)
+        version: 8.1.0(@ember/test-helpers@4.0.4(@babel/core@7.26.0)(@glint/template@1.5.0)(ember-source@5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1)))(@glint/template@1.5.0)(ember-source@5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1))(qunit@2.22.0)
       ember-resolver:
         specifier: ^13.0.2
         version: 13.0.2(ember-source@5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1))
@@ -1087,11 +1087,10 @@ packages:
   '@ember/string@4.0.0':
     resolution: {integrity: sha512-IMVyVE72twuAMSYcHzWSgtgYTtzlHlKSGW8vEbztnnmkU6uo7kVHmiqSN9R4RkBhzvh0VD4G76Eph+55t3iNIA==}
 
-  '@ember/test-helpers@3.3.0':
-    resolution: {integrity: sha512-HEI28wtjnQuEj9+DstHUEEKPtqPAEVN9AAVr4EifVCd3DyEDy0m6hFT4qbap1WxAIktLja2QXGJg50lVWzZc5g==}
-    engines: {node: 16.* || >= 18}
+  '@ember/test-helpers@4.0.4':
+    resolution: {integrity: sha512-1mbOVyVEcLxYOGzBaeeaQkCrL1o9Av86QaHk/1RvrVBW24I6YUj1ILLEi2qLZT5PzcCy0TdfadHT3hKJwJ0GcQ==}
     peerDependencies:
-      ember-source: ^4.0.0 || ^5.0.0
+      ember-source: '>= 4.0.0'
 
   '@ember/test-waiters@3.1.0':
     resolution: {integrity: sha512-bb9h95ktG2wKY9+ja1sdsFBdOms2lB19VWs8wmNpzgHv1NCetonBoV5jHBV4DHt0uS1tg9z66cZqhUVlYs96KQ==}
@@ -8365,22 +8364,19 @@ snapshots:
 
   '@ember/string@4.0.0': {}
 
-  '@ember/test-helpers@3.3.0(@glint/template@1.5.0)(ember-source@5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1))(webpack@5.92.1)':
+  '@ember/test-helpers@4.0.4(@babel/core@7.26.0)(@glint/template@1.5.0)(ember-source@5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1))':
     dependencies:
       '@ember/test-waiters': 3.1.0
+      '@embroider/addon-shim': 1.8.9
       '@embroider/macros': 1.16.5(@glint/template@1.5.0)
       '@simple-dom/interface': 1.4.0
-      broccoli-debug: 0.6.5
-      broccoli-funnel: 3.0.8
+      decorator-transforms: 2.0.0(@babel/core@7.26.0)
       dom-element-descriptors: 0.5.1
-      ember-auto-import: 2.10.0(@glint/template@1.5.0)(webpack@5.92.1)
-      ember-cli-babel: 7.26.11
-      ember-cli-htmlbars: 6.3.0
       ember-source: 5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1)
     transitivePeerDependencies:
+      - '@babel/core'
       - '@glint/template'
       - supports-color
-      - webpack
 
   '@ember/test-waiters@3.1.0':
     dependencies:
@@ -11521,9 +11517,9 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  ember-qunit@8.1.0(@ember/test-helpers@3.3.0(@glint/template@1.5.0)(ember-source@5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1))(webpack@5.92.1))(@glint/template@1.5.0)(ember-source@5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1))(qunit@2.22.0):
+  ember-qunit@8.1.0(@ember/test-helpers@4.0.4(@babel/core@7.26.0)(@glint/template@1.5.0)(ember-source@5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1)))(@glint/template@1.5.0)(ember-source@5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1))(qunit@2.22.0):
     dependencies:
-      '@ember/test-helpers': 3.3.0(@glint/template@1.5.0)(ember-source@5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1))(webpack@5.92.1)
+      '@ember/test-helpers': 4.0.4(@babel/core@7.26.0)(@glint/template@1.5.0)(ember-source@5.12.0(@glimmer/component@1.1.2(@babel/core@7.26.0))(@glint/template@1.5.0)(rsvp@4.8.5)(webpack@5.92.1))
       '@embroider/addon-shim': 1.8.9
       '@embroider/macros': 1.16.5(@glint/template@1.5.0)
       ember-cli-test-loader: 3.1.0
diff --git a/test-app/package.json b/test-app/package.json
index 28830bf..a727e77 100644
--- a/test-app/package.json
+++ b/test-app/package.json
@@ -36,7 +36,7 @@
     "@babel/core": "^7.26.0",
     "@ember/optional-features": "^2.1.0",
     "@ember/string": "^4.0.0",
-    "@ember/test-helpers": "^3.3.0",
+    "@ember/test-helpers": "^4.0.4",
     "@embroider/test-setup": "^4.0.0",
     "@glimmer/component": "^1.1.2",
     "@glimmer/tracking": "^1.1.2",