diff --git a/docs/package.json b/docs/package.json
index 6e802cfc..989015fa 100644
--- a/docs/package.json
+++ b/docs/package.json
@@ -68,7 +68,7 @@
     "ember-dynamic-render-template": "^0.0.6",
     "ember-fetch": "^8.1.2",
     "ember-load-initializers": "^2.1.2",
-    "ember-modifier": "^4.1.0",
+    "ember-modifier": "^4.2.0",
     "ember-qunit": "^8.1.0",
     "ember-resolver": "^11.0.1",
     "ember-source": "~5.10.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index d3b53a84..bae14aa5 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -135,8 +135,8 @@ importers:
         specifier: ^2.1.2
         version: 2.1.2(@babel/core@7.24.7)
       ember-modifier:
-        specifier: ^4.1.0
-        version: 4.1.0(ember-source@5.10.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)(webpack@5.92.1))
+        specifier: ^4.2.0
+        version: 4.2.0(@babel/core@7.24.7)(ember-source@5.10.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(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@1.4.0)(ember-source@5.10.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)(webpack@5.92.1))(webpack@5.92.1))(@glint/template@1.4.0)(ember-source@5.10.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)(webpack@5.92.1))(qunit@2.21.0)
@@ -248,10 +248,10 @@ importers:
         version: 1.4.0(typescript@5.4.3)
       '@glint/environment-ember-loose':
         specifier: ^1.4.0
-        version: 1.4.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.1.0(ember-source@5.2.0(@babel/core@7.24.7)(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)))
+        version: 1.4.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.2.0(@babel/core@7.24.7)(ember-source@5.2.0(@babel/core@7.24.7)(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)))
       '@glint/environment-ember-template-imports':
         specifier: ^1.4.0
-        version: 1.4.0(@glint/environment-ember-loose@1.4.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.1.0(ember-source@5.2.0(@babel/core@7.24.7)(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5))))(@glint/template@1.4.0)
+        version: 1.4.0(@glint/environment-ember-loose@1.4.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.2.0(@babel/core@7.24.7)(ember-source@5.2.0(@babel/core@7.24.7)(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5))))(@glint/template@1.4.0)
       '@glint/template':
         specifier: ^1.4.0
         version: 1.4.0
@@ -398,8 +398,8 @@ importers:
         specifier: ^2.1.2
         version: 2.1.2(@babel/core@7.24.7)
       ember-modifier:
-        specifier: ^4.1.0
-        version: 4.1.0(ember-source@5.10.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)(webpack@5.92.1))
+        specifier: ^4.2.0
+        version: 4.2.0(@babel/core@7.24.7)(ember-source@5.10.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)(webpack@5.92.1))
       ember-page-title:
         specifier: ^8.2.3
         version: 8.2.3(ember-source@5.10.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)(webpack@5.92.1))
@@ -2674,6 +2674,10 @@ packages:
     resolution: {integrity: sha512-pkWynbLwru0RZmA9iKeQL63+CkkW0RCP3kL5njCtudd6YPUKb5Pa0kL4fb3bmuKn2QDBFwY5mvvhEK/+jv2Ynw==}
     engines: {node: '>= 12.*'}
 
+  babel-import-util@3.0.0:
+    resolution: {integrity: sha512-4YNPkuVsxAW5lnSTa6cn4Wk49RX6GAB6vX+M6LqEtN0YePqoFczv1/x0EyLK/o+4E1j9jEuYj5Su7IEPab5JHQ==}
+    engines: {node: '>= 12.*'}
+
   babel-loader@8.3.0:
     resolution: {integrity: sha512-H8SvsMF+m9t15HNLMipppzkC+Y2Yq+v3SonZyU70RBL/h1gxPkH08Ot8pEE9Z4Kd+czyWJClmFS8qzIP9OZ04Q==}
     engines: {node: '>= 8.9'}
@@ -3997,6 +4001,9 @@ packages:
     resolution: {integrity: sha512-aW35yZM6Bb/4oJlZncMH2LCoZtJXTRxES17vE3hoRiowU2kWHaJKFkSBDnDR+cm9J+9QhXmREyIfv0pji9ejCQ==}
     engines: {node: '>=10'}
 
+  decorator-transforms@2.0.0:
+    resolution: {integrity: sha512-ETfQccGcotK01YJsoB0AGTdUp7kS9jI93mBzrRY5Oyo+bOJfa2UKTSjCNf+iRNwAWBmBKlbiCcyL4tkY4C4dZQ==}
+
   deep-extend@0.6.0:
     resolution: {integrity: sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==}
     engines: {node: '>=4.0.0'}
@@ -4403,10 +4410,10 @@ packages:
     peerDependencies:
       ember-source: ^4.0.0 || ^5.0.0
 
-  ember-modifier@4.1.0:
-    resolution: {integrity: sha512-YFCNpEYj6jdyy3EjslRb2ehNiDvaOrXTilR9+ngq+iUqSHYto2zKV0rleiA1XJQ27ELM1q8RihT29U6Lq5EyqQ==}
+  ember-modifier@4.2.0:
+    resolution: {integrity: sha512-BJ48eTEGxD8J7+lofwVmee7xDgNDgpr5dd6+MSu4gk+I6xb35099RMNorXY5hjjwMJEyi/IRR6Yn3M7iJMz8Zw==}
     peerDependencies:
-      ember-source: '*'
+      ember-source: ^3.24 || >=4.0
     peerDependenciesMeta:
       ember-source:
         optional: true
@@ -11833,17 +11840,17 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  '@glint/environment-ember-loose@1.4.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.1.0(ember-source@5.2.0(@babel/core@7.24.7)(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)))':
+  '@glint/environment-ember-loose@1.4.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.2.0(@babel/core@7.24.7)(ember-source@5.2.0(@babel/core@7.24.7)(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)))':
     dependencies:
       '@glimmer/component': 1.1.2(@babel/core@7.24.7)
       '@glint/template': 1.4.0
     optionalDependencies:
       ember-cli-htmlbars: 6.3.0
-      ember-modifier: 4.1.0(ember-source@5.2.0(@babel/core@7.24.7)(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5))
+      ember-modifier: 4.2.0(@babel/core@7.24.7)(ember-source@5.2.0(@babel/core@7.24.7)(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5))
 
-  '@glint/environment-ember-template-imports@1.4.0(@glint/environment-ember-loose@1.4.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.1.0(ember-source@5.2.0(@babel/core@7.24.7)(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5))))(@glint/template@1.4.0)':
+  '@glint/environment-ember-template-imports@1.4.0(@glint/environment-ember-loose@1.4.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.2.0(@babel/core@7.24.7)(ember-source@5.2.0(@babel/core@7.24.7)(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5))))(@glint/template@1.4.0)':
     dependencies:
-      '@glint/environment-ember-loose': 1.4.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.1.0(ember-source@5.2.0(@babel/core@7.24.7)(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)))
+      '@glint/environment-ember-loose': 1.4.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.2.0(@babel/core@7.24.7)(ember-source@5.2.0(@babel/core@7.24.7)(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)))
       '@glint/template': 1.4.0
       content-tag: 2.0.1
 
@@ -13240,6 +13247,8 @@ snapshots:
 
   babel-import-util@2.0.0: {}
 
+  babel-import-util@3.0.0: {}
+
   babel-loader@8.3.0(@babel/core@7.24.7(supports-color@8.1.1))(webpack@5.92.1):
     dependencies:
       '@babel/core': 7.24.7(supports-color@8.1.1)
@@ -15031,6 +15040,13 @@ snapshots:
     dependencies:
       mimic-response: 3.1.0
 
+  decorator-transforms@2.0.0(@babel/core@7.24.7):
+    dependencies:
+      '@babel/plugin-syntax-decorators': 7.24.7(@babel/core@7.24.7)
+      babel-import-util: 3.0.0
+    transitivePeerDependencies:
+      - '@babel/core'
+
   deep-extend@0.6.0: {}
 
   deep-is@0.1.4: {}
@@ -15842,24 +15858,28 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  ember-modifier@4.1.0(ember-source@5.10.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)(webpack@5.92.1)):
+  ember-modifier@4.2.0(@babel/core@7.24.7)(ember-source@5.10.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)(webpack@5.92.1)):
     dependencies:
-      '@embroider/addon-shim': 1.8.8
+      '@embroider/addon-shim': 1.8.9
+      decorator-transforms: 2.0.0(@babel/core@7.24.7)
       ember-cli-normalize-entity-name: 1.0.0
       ember-cli-string-utils: 1.1.0
     optionalDependencies:
       ember-source: 5.10.0(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)(webpack@5.92.1)
     transitivePeerDependencies:
+      - '@babel/core'
       - supports-color
 
-  ember-modifier@4.1.0(ember-source@5.2.0(@babel/core@7.24.7)(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)):
+  ember-modifier@4.2.0(@babel/core@7.24.7)(ember-source@5.2.0(@babel/core@7.24.7)(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)):
     dependencies:
-      '@embroider/addon-shim': 1.8.8
+      '@embroider/addon-shim': 1.8.9
+      decorator-transforms: 2.0.0(@babel/core@7.24.7)
       ember-cli-normalize-entity-name: 1.0.0
       ember-cli-string-utils: 1.1.0
     optionalDependencies:
       ember-source: 5.2.0(@babel/core@7.24.7)(@glimmer/component@1.1.2(@babel/core@7.24.7))(@glint/template@1.4.0)(rsvp@4.8.5)
     transitivePeerDependencies:
+      - '@babel/core'
       - supports-color
     optional: true
 
diff --git a/test-app/package.json b/test-app/package.json
index b2af2192..b4c8239a 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": "^8.1.0",
     "ember-resolver": "^11.0.1",