diff --git a/package.json b/package.json
index c5f1af3f..43f422d5 100644
--- a/package.json
+++ b/package.json
@@ -113,7 +113,7 @@
     "@ember/optional-features": "^2.2.0",
     "@ember/string": "^3.1.1",
     "@ember/test-helpers": "^3.3.1",
-    "@embroider/test-setup": "^3.0.3",
+    "@embroider/test-setup": "^4.0.0",
     "@fullhuman/postcss-purgecss": "^4.1.3",
     "@release-it-plugins/lerna-changelog": "^7.0.0",
     "broccoli-asset-rev": "^3.0.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index f8f9807f..aeb8d090 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -253,8 +253,8 @@ importers:
         specifier: ^3.3.1
         version: 3.3.1(@babel/core@7.26.0)(ember-source@5.11.1(@glimmer/component@1.1.2(@babel/core@7.26.0))(rsvp@4.8.5)(webpack@5.97.1))(webpack@5.97.1)
       '@embroider/test-setup':
-        specifier: ^3.0.3
-        version: 3.0.3
+        specifier: ^4.0.0
+        version: 4.0.0
       '@fullhuman/postcss-purgecss':
         specifier: ^4.1.3
         version: 4.1.3(postcss@8.4.49)
@@ -1293,13 +1293,13 @@ packages:
     resolution: {integrity: sha512-zi0CENFD1e0DH7c9M/rNKJnFnt2c3+736J3lguBddZdmaIV6Cb8l3HQSkskSW5O4ady+SavemLKO3hCjQQJBIw==}
     engines: {node: 12.* || 14.* || >= 16}
 
-  '@embroider/test-setup@3.0.3':
-    resolution: {integrity: sha512-3K5KSyTdnxAkZQill6+TdC/XTRr6226LNwZMsrhRbBM0FFZXw2D8qmJSHPvZLheQx3A1jnF9t1lyrAzrKlg6Yw==}
+  '@embroider/test-setup@4.0.0':
+    resolution: {integrity: sha512-1S3Ebk0CEh3XDqD93AWSwQZBCk+oGv03gtkaGgdgyXGIR7jrVyDgEnEuslN/hJ0cuU8TqhiXrzHMw7bJwIGhWw==}
     engines: {node: 12.* || 14.* || >= 16}
     peerDependencies:
-      '@embroider/compat': ^3.3.0
-      '@embroider/core': ^3.4.0
-      '@embroider/webpack': ^3.2.1
+      '@embroider/compat': ^3.4.8
+      '@embroider/core': ^3.4.8
+      '@embroider/webpack': ^4.0.0
     peerDependenciesMeta:
       '@embroider/compat':
         optional: true
@@ -9900,7 +9900,7 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  '@embroider/test-setup@3.0.3':
+  '@embroider/test-setup@4.0.0':
     dependencies:
       lodash: 4.17.21
       resolve: 1.22.8