diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 160be9e7..ad6b19f6 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -199,8 +199,8 @@ importers:
         specifier: ^4.0.0
         version: 4.0.0
       '@ember/test-helpers':
-        specifier: ^3.2.1
-        version: 3.3.0(@glint/template@1.3.0)(ember-source@5.11.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.3.0)(rsvp@4.8.5)(webpack@5.90.3))(webpack@5.90.3)
+        specifier: ^4.0.0
+        version: 4.0.0(@babel/core@7.24.7)(@glint/template@1.3.0)
       '@embroider/test-setup':
         specifier: ^4.0.0
         version: 4.0.0(@embroider/core@3.4.14(@glint/template@1.3.0))
@@ -353,7 +353,7 @@ importers:
         version: 8.2.2(ember-source@5.11.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.3.0)(rsvp@4.8.5)(webpack@5.90.3))
       ember-qunit:
         specifier: ^8.0.2
-        version: 8.0.2(@ember/test-helpers@3.3.0(@glint/template@1.3.0)(ember-source@5.11.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.3.0)(rsvp@4.8.5)(webpack@5.90.3))(webpack@5.90.3))(@glint/template@1.3.0)(ember-source@5.11.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.3.0)(rsvp@4.8.5)(webpack@5.90.3))(qunit@2.20.1)
+        version: 8.0.2(@ember/test-helpers@4.0.0(@babel/core@7.24.7)(@glint/template@1.3.0))(@glint/template@1.3.0)(ember-source@5.11.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.3.0)(rsvp@4.8.5)(webpack@5.90.3))(qunit@2.20.1)
       ember-resolver:
         specifier: ^11.0.1
         version: 11.0.1(ember-source@5.11.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.3.0)(rsvp@4.8.5)(webpack@5.90.3))
@@ -1132,11 +1132,8 @@ 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}
-    peerDependencies:
-      ember-source: ^4.0.0 || ^5.0.0
+  '@ember/test-helpers@4.0.0':
+    resolution: {integrity: sha512-4LEWW3zNBsuUQ4AV8ZZJu2TJS1PosLsLotpckP0J1IgmHs9Vw/124VwB7OnYsnnlWngKzaj2NSQtPqr3fVjZpg==}
 
   '@ember/test-waiters@3.1.0':
     resolution: {integrity: sha512-bb9h95ktG2wKY9+ja1sdsFBdOms2lB19VWs8wmNpzgHv1NCetonBoV5jHBV4DHt0uS1tg9z66cZqhUVlYs96KQ==}
@@ -8331,22 +8328,18 @@ snapshots:
 
   '@ember/string@4.0.0': {}
 
-  '@ember/test-helpers@3.3.0(@glint/template@1.3.0)(ember-source@5.11.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.3.0)(rsvp@4.8.5)(webpack@5.90.3))(webpack@5.90.3)':
+  '@ember/test-helpers@4.0.0(@babel/core@7.24.7)(@glint/template@1.3.0)':
     dependencies:
       '@ember/test-waiters': 3.1.0
+      '@embroider/addon-shim': 1.8.7
       '@embroider/macros': 1.16.5(@glint/template@1.3.0)
       '@simple-dom/interface': 1.4.0
-      broccoli-debug: 0.6.5
-      broccoli-funnel: 3.0.8
+      decorator-transforms: 2.0.0(@babel/core@7.24.7)
       dom-element-descriptors: 0.5.0
-      ember-auto-import: 2.7.2(@glint/template@1.3.0)(webpack@5.90.3)
-      ember-cli-babel: 7.26.11
-      ember-cli-htmlbars: 6.3.0
-      ember-source: 5.11.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.3.0)(rsvp@4.8.5)(webpack@5.90.3)
     transitivePeerDependencies:
+      - '@babel/core'
       - '@glint/template'
       - supports-color
-      - webpack
 
   '@ember/test-waiters@3.1.0':
     dependencies:
@@ -11577,9 +11570,9 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  ember-qunit@8.0.2(@ember/test-helpers@3.3.0(@glint/template@1.3.0)(ember-source@5.11.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.3.0)(rsvp@4.8.5)(webpack@5.90.3))(webpack@5.90.3))(@glint/template@1.3.0)(ember-source@5.11.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.3.0)(rsvp@4.8.5)(webpack@5.90.3))(qunit@2.20.1):
+  ember-qunit@8.0.2(@ember/test-helpers@4.0.0(@babel/core@7.24.7)(@glint/template@1.3.0))(@glint/template@1.3.0)(ember-source@5.11.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.3.0)(rsvp@4.8.5)(webpack@5.90.3))(qunit@2.20.1):
     dependencies:
-      '@ember/test-helpers': 3.3.0(@glint/template@1.3.0)(ember-source@5.11.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.3.0)(rsvp@4.8.5)(webpack@5.90.3))(webpack@5.90.3)
+      '@ember/test-helpers': 4.0.0(@babel/core@7.24.7)(@glint/template@1.3.0)
       '@embroider/addon-shim': 1.8.7
       '@embroider/macros': 1.16.5(@glint/template@1.3.0)
       ember-cli-test-loader: 3.1.0
diff --git a/test-app/package.json b/test-app/package.json
index 254676ae..b82f1a3b 100644
--- a/test-app/package.json
+++ b/test-app/package.json
@@ -29,7 +29,7 @@
     "@babel/core": "^7.23.6",
     "@ember/optional-features": "^2.0.0",
     "@ember/string": "^4.0.0",
-    "@ember/test-helpers": "^3.2.1",
+    "@ember/test-helpers": "^4.0.0",
     "@embroider/test-setup": "^4.0.0",
     "@glimmer/component": "^1.1.2",
     "@glimmer/tracking": "^1.1.2",