diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index da31ee00..f97967f0 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -68,7 +68,7 @@ importers:
         version: 1.3.0(typescript@5.6.2)
       '@glint/environment-ember-loose':
         specifier: ^1.4.0
-        version: 1.4.0(@glimmer/component@1.1.2)(@glint/template@1.3.0)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.1.0)
+        version: 1.4.0(@glimmer/component@1.1.2)(@glint/template@1.3.0)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.2.0)
       '@glint/template':
         specifier: ^1.3.0
         version: 1.3.0
@@ -156,7 +156,7 @@ importers:
         version: 1.3.0(typescript@5.6.2)
       '@glint/environment-ember-loose':
         specifier: 1.4.0
-        version: 1.4.0(@glimmer/component@1.1.2)(@glint/template@1.3.0)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.1.0)
+        version: 1.4.0(@glimmer/component@1.1.2)(@glint/template@1.3.0)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.2.0)
       '@glint/template':
         specifier: 1.3.0
         version: 1.3.0
@@ -239,8 +239,8 @@ importers:
         specifier: ^2.1.2
         version: 2.1.2(@babel/core@7.24.0)
       ember-modifier:
-        specifier: ^4.1.0
-        version: 4.1.0(ember-source@5.3.0)
+        specifier: ^4.2.0
+        version: 4.2.0(@babel/core@7.24.0)(ember-source@5.3.0)
       ember-page-title:
         specifier: ^8.2.3
         version: 8.2.3(ember-source@5.3.0)
@@ -2882,7 +2882,7 @@ packages:
       - supports-color
     dev: true
 
-  /@glint/environment-ember-loose@1.4.0(@glimmer/component@1.1.2)(@glint/template@1.3.0)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.1.0):
+  /@glint/environment-ember-loose@1.4.0(@glimmer/component@1.1.2)(@glint/template@1.3.0)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.2.0):
     resolution: {integrity: sha512-vFR3qgPTisGzS36e04195wTUrtUc6GuVwm6hsC/XXx6PeRw/6rtMxhK08Aw/VtDc00UqQzM9sIEghPVKHwqVVQ==}
     peerDependencies:
       '@glimmer/component': ^1.1.2
@@ -2913,7 +2913,7 @@ packages:
       '@glimmer/component': 1.1.2(@babel/core@7.24.0)
       '@glint/template': 1.3.0
       ember-cli-htmlbars: 6.3.0
-      ember-modifier: 4.1.0(ember-source@5.3.0)
+      ember-modifier: 4.2.0(@babel/core@7.24.0)(ember-source@5.3.0)
     dev: true
 
   /@glint/template@1.3.0:
@@ -8778,19 +8778,21 @@ packages:
       - supports-color
     dev: true
 
-  /ember-modifier@4.1.0(ember-source@5.3.0):
-    resolution: {integrity: sha512-YFCNpEYj6jdyy3EjslRb2ehNiDvaOrXTilR9+ngq+iUqSHYto2zKV0rleiA1XJQ27ELM1q8RihT29U6Lq5EyqQ==}
+  /ember-modifier@4.2.0(@babel/core@7.24.0)(ember-source@5.3.0):
+    resolution: {integrity: sha512-BJ48eTEGxD8J7+lofwVmee7xDgNDgpr5dd6+MSu4gk+I6xb35099RMNorXY5hjjwMJEyi/IRR6Yn3M7iJMz8Zw==}
     peerDependencies:
-      ember-source: '*'
+      ember-source: ^3.24 || >=4.0
     peerDependenciesMeta:
       ember-source:
         optional: true
     dependencies:
       '@embroider/addon-shim': 1.8.7
+      decorator-transforms: 2.3.0(@babel/core@7.24.0)
       ember-cli-normalize-entity-name: 1.0.0
       ember-cli-string-utils: 1.1.0
       ember-source: 5.3.0(@babel/core@7.24.0)(@glimmer/component@1.1.2)(@glint/template@1.3.0)(rsvp@4.8.5)(webpack@5.94.0)
     transitivePeerDependencies:
+      - '@babel/core'
       - supports-color
     dev: true
 
diff --git a/test-app/package.json b/test-app/package.json
index 9ecd3d09..513be77e 100644
--- a/test-app/package.json
+++ b/test-app/package.json
@@ -63,7 +63,7 @@
     "ember-disable-prototype-extensions": "^1.1.3",
     "ember-fetch": "^8.1.2",
     "ember-load-initializers": "^2.1.2",
-    "ember-modifier": "^4.1.0",
+    "ember-modifier": "^4.2.0",
     "ember-page-title": "^8.2.3",
     "ember-qunit": "^8.0.2",
     "ember-resolver": "^11.0.1",