diff --git a/ember-file-upload/package.json b/ember-file-upload/package.json
index 02f5703e..50c09397 100644
--- a/ember-file-upload/package.json
+++ b/ember-file-upload/package.json
@@ -76,7 +76,7 @@
     "@typescript-eslint/parser": "^6.0.0",
     "concurrently": "^8.0.1",
     "ember-cli-htmlbars": "^6.1.1",
-    "ember-modifier": "^3.2.7",
+    "ember-modifier": "^4.0.0",
     "ember-source": "~5.5.0",
     "ember-template-lint": "^5.0.0",
     "eslint": "^8.42.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index a98d8bf4..4603fb76 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -83,7 +83,7 @@ importers:
         version: 1.2.1(typescript@5.2.2)
       '@glint/environment-ember-loose':
         specifier: ^1.0.2
-        version: 1.2.1(@glimmer/component@1.1.2)(@glint/template@1.2.1)(ember-cli-htmlbars@6.3.0)(ember-modifier@3.2.7)
+        version: 1.2.1(@glimmer/component@1.1.2)(@glint/template@1.2.1)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.1.0)
       '@glint/template':
         specifier: ^1.0.2
         version: 1.2.1
@@ -109,8 +109,8 @@ importers:
         specifier: ^6.1.1
         version: 6.3.0
       ember-modifier:
-        specifier: ^3.2.7
-        version: 3.2.7(@babel/core@7.23.6)
+        specifier: ^4.0.0
+        version: 4.1.0(ember-source@5.5.0)
       ember-source:
         specifier: ~5.5.0
         version: 5.5.0(@babel/core@7.23.6)(@glimmer/component@1.1.2)(@glint/template@1.2.1)(rsvp@4.8.5)(webpack@5.89.0)
@@ -2349,40 +2349,6 @@ packages:
       - supports-color
     dev: true
 
-  /@glint/environment-ember-loose@1.2.1(@glimmer/component@1.1.2)(@glint/template@1.2.1)(ember-cli-htmlbars@6.3.0)(ember-modifier@3.2.7):
-    resolution: {integrity: sha512-ZA0Ht7vwd1FosVLtMFrB2Er62P1v6yX/UuS6z9UVR6DMPfrL5qx6vef+EGJPLBrBKZMlm7zMB6Fyca201y4hDA==}
-    peerDependencies:
-      '@glimmer/component': ^1.1.2
-      '@glint/template': ^1.2.1
-      '@types/ember__array': ^4.0.2
-      '@types/ember__component': ^4.0.10
-      '@types/ember__controller': ^4.0.2
-      '@types/ember__object': ^4.0.4
-      '@types/ember__routing': ^4.0.11
-      ember-cli-htmlbars: ^6.0.1
-      ember-modifier: ^3.2.7 || ^4.0.0
-    peerDependenciesMeta:
-      '@types/ember__array':
-        optional: true
-      '@types/ember__component':
-        optional: true
-      '@types/ember__controller':
-        optional: true
-      '@types/ember__object':
-        optional: true
-      '@types/ember__routing':
-        optional: true
-      ember-cli-htmlbars:
-        optional: true
-      ember-modifier:
-        optional: true
-    dependencies:
-      '@glimmer/component': 1.1.2(@babel/core@7.23.6)
-      '@glint/template': 1.2.1
-      ember-cli-htmlbars: 6.3.0
-      ember-modifier: 3.2.7(@babel/core@7.23.6)
-    dev: true
-
   /@glint/environment-ember-loose@1.2.1(@glimmer/component@1.1.2)(@glint/template@1.2.1)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.1.0):
     resolution: {integrity: sha512-ZA0Ht7vwd1FosVLtMFrB2Er62P1v6yX/UuS6z9UVR6DMPfrL5qx6vef+EGJPLBrBKZMlm7zMB6Fyca201y4hDA==}
     peerDependencies:
@@ -6575,20 +6541,6 @@ packages:
       - supports-color
     dev: true
 
-  /ember-modifier@3.2.7(@babel/core@7.23.6):
-    resolution: {integrity: sha512-ezcPQhH8jUfcJQbbHji4/ZG/h0yyj1jRDknfYue/ypQS8fM8LrGcCMo0rjDZLzL1Vd11InjNs3BD7BdxFlzGoA==}
-    engines: {node: 12.* || >= 14}
-    dependencies:
-      ember-cli-babel: 7.26.11
-      ember-cli-normalize-entity-name: 1.0.0
-      ember-cli-string-utils: 1.1.0
-      ember-cli-typescript: 5.2.1
-      ember-compatibility-helpers: 1.2.7(@babel/core@7.23.6)
-    transitivePeerDependencies:
-      - '@babel/core'
-      - supports-color
-    dev: true
-
   /ember-modifier@4.1.0(ember-source@5.5.0):
     resolution: {integrity: sha512-YFCNpEYj6jdyy3EjslRb2ehNiDvaOrXTilR9+ngq+iUqSHYto2zKV0rleiA1XJQ27ELM1q8RihT29U6Lq5EyqQ==}
     peerDependencies: