diff --git a/package.json b/package.json
index b28b817..a5f22ea 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
   "devDependencies": {
     "@ember/optional-features": "2.2.0",
     "@ember/test-helpers": "2.9.6",
-    "@embroider/test-setup": "1.8.3",
+    "@embroider/test-setup": "4.0.0",
     "@glimmer/component": "1.1.2",
     "@glimmer/tracking": "1.1.2",
     "babel-eslint": "10.1.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 5aa8762..2ee1d67 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -22,8 +22,8 @@ importers:
         specifier: 2.9.6
         version: 2.9.6(@babel/core@7.28.4)(ember-source@4.12.4(@babel/core@7.28.4)(@glimmer/component@1.1.2(@babel/core@7.28.4))(webpack@5.94.0))
       '@embroider/test-setup':
-        specifier: 1.8.3
-        version: 1.8.3
+        specifier: 4.0.0
+        version: 4.0.0
       '@glimmer/component':
         specifier: 1.1.2
         version: 1.1.2(@babel/core@7.28.4)
@@ -796,9 +796,20 @@ packages:
     resolution: {integrity: sha512-5J5ipUMCAinQS38WW7wedruq5Z4VnHvNo+ZgOduw0PtI9w0CQWx7/HE+98PBDW8jclikeF+aHwF317vc1hwuzg==}
     engines: {node: 12.* || 14.* || >= 16}
 
-  '@embroider/test-setup@1.8.3':
-    resolution: {integrity: sha512-BCCbBG7UWkCw+cQ401Ip6LnqTRaQDeKImxR+e7Q4oP6H4EBj7p4iGR1z6fhMy4NNyXKPB6jk3bGa9bTiiNoEAw==}
+  '@embroider/test-setup@4.0.0':
+    resolution: {integrity: sha512-1S3Ebk0CEh3XDqD93AWSwQZBCk+oGv03gtkaGgdgyXGIR7jrVyDgEnEuslN/hJ0cuU8TqhiXrzHMw7bJwIGhWw==}
     engines: {node: 12.* || 14.* || >= 16}
+    peerDependencies:
+      '@embroider/compat': ^3.4.8
+      '@embroider/core': ^3.4.8
+      '@embroider/webpack': ^4.0.0
+    peerDependenciesMeta:
+      '@embroider/compat':
+        optional: true
+      '@embroider/core':
+        optional: true
+      '@embroider/webpack':
+        optional: true
 
   '@embroider/util@1.13.4':
     resolution: {integrity: sha512-TqA0SNQarSJUdYGv+39MBCHkiuxhr2u0iKJP/JnDmQkCiVhvuFWy3P3n5sI26fVrVwG3DJLfxE2XVnB37udFOA==}
@@ -7884,7 +7895,7 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  '@embroider/test-setup@1.8.3':
+  '@embroider/test-setup@4.0.0':
     dependencies:
       lodash: 4.17.21
       resolve: 1.22.10