diff --git a/Cargo.lock b/Cargo.lock
index de51d3f..2f6d86c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1965,6 +1965,7 @@ dependencies = [
  "fluent-core",
  "fluent-layout",
  "gpui",
+ "gpui_platform",
 ]
 
 [[package]]
@@ -2009,6 +2010,7 @@ version = "0.1.0"
 dependencies = [
  "fluent-core",
  "gpui",
+ "gpui_platform",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index b114892..a613f10 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -43,6 +43,7 @@ members = [
 
 [workspace.dependencies]
 gpui = { path = "vendor/zed/crates/gpui", version = "0.2" }
+gpui_platform = { path = "vendor/zed/crates/gpui_platform", version = "0.1" }
 
 fluent-core        = { path = "crates/fluent-core",        version = "2.4.0" }
 fluent-primitives  = { path = "crates/fluent-primitives",  version = "2.4.0" }
diff --git a/crates/fluent-app/Cargo.toml b/crates/fluent-app/Cargo.toml
index 1cf5fcf..00677f1 100644
--- a/crates/fluent-app/Cargo.toml
+++ b/crates/fluent-app/Cargo.toml
@@ -10,5 +10,6 @@ categories = ["gui"]
 
 [dependencies]
 gpui            = { workspace = true }
+gpui_platform   = { workspace = true }
 fluent-core     = { workspace = true }
 fluent-layout   = { workspace = true }
diff --git a/crates/fluent-app/src/app_builder.rs b/crates/fluent-app/src/app_builder.rs
index a12ec9a..1c3a100 100644
--- a/crates/fluent-app/src/app_builder.rs
+++ b/crates/fluent-app/src/app_builder.rs
@@ -3,8 +3,8 @@ use std::sync::Arc;
 use fluent_core::Theme;
 use fluent_layout::{modal::ModalStack, ToastStack};
 use gpui::{
-    prelude::*, px, size, App, Application, AssetSource, Bounds, Context, Entity, IntoElement,
-    Render, SharedString, TitlebarOptions, Window, WindowBounds, WindowDecorations, WindowOptions,
+    prelude::*, px, size, App, AssetSource, Bounds, Context, Entity, IntoElement, Render,
+    SharedString, TitlebarOptions, Window, WindowBounds, WindowDecorations, WindowOptions,
 };
 
 use crate::{
@@ -159,7 +159,7 @@ impl FluentApp {
         let dark = self.dark;
         let assets = self.assets;
 
-        Application::new()
+        gpui_platform::application()
             .with_assets(FluentAssets::new(assets))
             .run(move |cx: &mut App| {
                 if dark {
diff --git a/crates/fluent-test-utils/Cargo.toml b/crates/fluent-test-utils/Cargo.toml
index 7ba0da9..62ed7c2 100644
--- a/crates/fluent-test-utils/Cargo.toml
+++ b/crates/fluent-test-utils/Cargo.toml
@@ -5,4 +5,5 @@ edition = "2021"
 
 [dependencies]
 gpui = { workspace = true, features = ["test-support"] }
+gpui_platform = { workspace = true }
 fluent-core = { workspace = true }
diff --git a/crates/fluent-test-utils/src/lib.rs b/crates/fluent-test-utils/src/lib.rs
index f273ff0..07b5e38 100644
--- a/crates/fluent-test-utils/src/lib.rs
+++ b/crates/fluent-test-utils/src/lib.rs
@@ -2,6 +2,13 @@ use fluent_core::Theme;
 
 pub use gpui::{Context, Entity, TestAppContext, VisualTestContext, Window};
 
+/// Build the GPUI application the way the ported crates do: the native platform
+/// comes from `gpui_platform`, not `gpui::Application::new`, which the vendored
+/// gpui no longer provides.
+pub fn application() -> gpui::Application {
+    gpui_platform::application()
+}
+
 pub fn init_fluent_test(cx: &mut TestAppContext) {
     cx.update(Theme::init);
 }