diff --git a/packages/app/src/desktop/permissions/desktop-permissions.test.ts b/packages/app/src/desktop/permissions/desktop-permissions.test.ts
index a773cb767..08fd2de29 100644
--- a/packages/app/src/desktop/permissions/desktop-permissions.test.ts
+++ b/packages/app/src/desktop/permissions/desktop-permissions.test.ts
@@ -86,9 +86,7 @@ describe("desktop-permissions", () => {
   });
 
   it("reads notification and microphone status", async () => {
-    class MockNotification {
-      static permission = "default";
-    }
+    const MockNotification = { permission: "default" };
     (globalThis as { Notification?: unknown }).Notification = MockNotification;
     setNavigator({
       permissions: {
@@ -152,10 +150,10 @@ describe("desktop-permissions", () => {
   });
 
   it("requests notification permission via the browser Notification API", async () => {
-    class MockNotification {
-      static permission = "default";
-      static requestPermission = vi.fn(async () => "granted");
-    }
+    const MockNotification = {
+      permission: "default",
+      requestPermission: vi.fn(async () => "granted"),
+    };
     (globalThis as { Notification?: unknown }).Notification = MockNotification;
 
     const { requestDesktopPermission } = await loadModuleForPlatform("web");
@@ -166,9 +164,7 @@ describe("desktop-permissions", () => {
   });
 
   it("reads browser Notification permission when available", async () => {
-    class MockNotification {
-      static permission = "denied";
-    }
+    const MockNotification = { permission: "denied" };
     (globalThis as { Notification?: unknown }).Notification = MockNotification;
     setNavigator({});
 
diff --git a/packages/app/src/terminal/runtime/terminal-emulator-runtime.test.ts b/packages/app/src/terminal/runtime/terminal-emulator-runtime.test.ts
index b3b2af2f0..078bccf34 100644
--- a/packages/app/src/terminal/runtime/terminal-emulator-runtime.test.ts
+++ b/packages/app/src/terminal/runtime/terminal-emulator-runtime.test.ts
@@ -1,31 +1,45 @@
 import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 
 vi.mock("@xterm/addon-clipboard", () => ({
-  ClipboardAddon: class ClipboardAddon {},
+  ClipboardAddon: class ClipboardAddon {
+    dispose(): void {}
+  },
 }));
 
 vi.mock("@xterm/addon-fit", () => ({
-  FitAddon: class FitAddon {},
+  FitAddon: class FitAddon {
+    dispose(): void {}
+  },
 }));
 
 vi.mock("@xterm/addon-image", () => ({
-  ImageAddon: class ImageAddon {},
+  ImageAddon: class ImageAddon {
+    dispose(): void {}
+  },
 }));
 
 vi.mock("@xterm/addon-ligatures/lib/addon-ligatures.mjs", () => ({
-  LigaturesAddon: class LigaturesAddon {},
+  LigaturesAddon: class LigaturesAddon {
+    dispose(): void {}
+  },
 }));
 
 vi.mock("@xterm/addon-search", () => ({
-  SearchAddon: class SearchAddon {},
+  SearchAddon: class SearchAddon {
+    dispose(): void {}
+  },
 }));
 
 vi.mock("@xterm/addon-unicode11", () => ({
-  Unicode11Addon: class Unicode11Addon {},
+  Unicode11Addon: class Unicode11Addon {
+    dispose(): void {}
+  },
 }));
 
 vi.mock("@xterm/addon-web-links", () => ({
-  WebLinksAddon: class WebLinksAddon {},
+  WebLinksAddon: class WebLinksAddon {
+    dispose(): void {}
+  },
 }));
 
 vi.mock("@xterm/addon-webgl", () => ({
@@ -36,7 +50,9 @@ vi.mock("@xterm/addon-webgl", () => ({
 }));
 
 vi.mock("@xterm/xterm", () => ({
-  Terminal: class Terminal {},
+  Terminal: class Terminal {
+    dispose(): void {}
+  },
 }));
 
 import { TerminalEmulatorRuntime } from "./terminal-emulator-runtime";
diff --git a/packages/app/vitest.setup.ts b/packages/app/vitest.setup.ts
index 800f73fa7..50a5734d0 100644
--- a/packages/app/vitest.setup.ts
+++ b/packages/app/vitest.setup.ts
@@ -64,7 +64,9 @@ vi.mock("react-native-unistyles", () => ({
 }));
 
 vi.mock("@xterm/addon-ligatures", () => ({
-  LigaturesAddon: class LigaturesAddon {},
+  LigaturesAddon: class LigaturesAddon {
+    dispose(): void {}
+  },
 }));
 
 vi.mock("react-native-svg", () => {