diff --git a/client/package-lock.json b/client/package-lock.json
index 33894e72e2..9614c2b6fe 100644
--- a/client/package-lock.json
+++ b/client/package-lock.json
@@ -26,7 +26,6 @@
       "devDependencies": {
         "@biomejs/biome": "2.5.12",
         "@tailwindcss/postcss": "4.3.3",
-        "@testing-library/dom": "10.4.1",
         "@testing-library/jest-dom": "7.0.1",
         "@testing-library/react": "16.3.3",
         "@testing-library/user-event": "14.6.7",
diff --git a/client/package.json b/client/package.json
index d29da45be4..edd7b7eed7 100644
--- a/client/package.json
+++ b/client/package.json
@@ -37,7 +37,6 @@
   "devDependencies": {
     "@biomejs/biome": "2.5.12",
     "@tailwindcss/postcss": "4.3.3",
-    "@testing-library/dom": "10.4.1",
     "@testing-library/jest-dom": "7.0.1",
     "@testing-library/react": "16.3.3",
     "@testing-library/user-event": "14.6.7",
diff --git a/client/src/components/writers-room/ExercisePanel.test.jsx b/client/src/components/writers-room/ExercisePanel.test.jsx
index 6f80fb2eef..4f20389413 100644
--- a/client/src/components/writers-room/ExercisePanel.test.jsx
+++ b/client/src/components/writers-room/ExercisePanel.test.jsx
@@ -1,6 +1,5 @@
 import { describe, it, expect, vi, beforeEach } from 'vitest';
-import { act, render, screen } from '@testing-library/react';
-import { fireEvent } from '@testing-library/dom';
+import { act, fireEvent, render, screen } from '@testing-library/react';
 
 // The "Add to draft" promotion (#5300) only offers itself for a finished
 // sprint that (a) actually captured prose, (b) belongs to the work currently
diff --git a/client/src/components/writers-room/WorkEditor.perf.test.jsx b/client/src/components/writers-room/WorkEditor.perf.test.jsx
index 64eb680720..4bc2730d03 100644
--- a/client/src/components/writers-room/WorkEditor.perf.test.jsx
+++ b/client/src/components/writers-room/WorkEditor.perf.test.jsx
@@ -1,6 +1,5 @@
 import { describe, it, expect, vi, beforeEach } from 'vitest';
-import { act, render } from '@testing-library/react';
-import { fireEvent } from '@testing-library/dom';
+import { act, fireEvent, render } from '@testing-library/react';
 import { createMemoryRouter, RouterProvider } from 'react-router';
 
 // Regression guard for #3387: typing in the WorkEditor body must NOT re-render
diff --git a/client/src/components/writers-room/WorkEditor.test.jsx b/client/src/components/writers-room/WorkEditor.test.jsx
index 9766c0de9e..91cd84e2d6 100644
--- a/client/src/components/writers-room/WorkEditor.test.jsx
+++ b/client/src/components/writers-room/WorkEditor.test.jsx
@@ -1,6 +1,5 @@
 import { describe, it, expect, vi, beforeEach } from 'vitest';
-import { act, render, screen, within } from '@testing-library/react';
-import { fireEvent } from '@testing-library/dom';
+import { act, fireEvent, render, screen, within } from '@testing-library/react';
 import { createMemoryRouter, RouterProvider } from 'react-router';
 
 // Header layout contract for #3568: on a ~375px phone the WorkEditor header
diff --git a/docs/DEPS.md b/docs/DEPS.md
index 13dfe5fca5..c4c25de0fd 100644
--- a/docs/DEPS.md
+++ b/docs/DEPS.md
@@ -78,7 +78,7 @@ Before removing a Tier 3 candidate, run a transitive-dep check (`npm ls <pkg>`).
 | `vitest` | 1 | KEEP | client test runner | happy-dom environment |
 | `happy-dom` | 1 | KEEP | test DOM | Paired with vitest. Replaced `jsdom` in #6144 — same suite, ~65% less time in `environment` |
 | `@testing-library/jest-dom` | 1 | KEEP | test matchers | |
-| `@testing-library/dom` | 1 | KEEP | DOM test utilities | Foundation for the client Testing Library stack |
+| `@testing-library/dom` | — | REMOVED (direct) | DOM test utilities | 2026-09-12 → imported through `@testing-library/react`; remains in the tree transitively, so this removes only the redundant direct pin |
 | `@testing-library/react` | 1 | KEEP | component tests | |
 | `@testing-library/user-event` | 1 | KEEP | interaction tests | |
 | `rollup-plugin-visualizer` | 2 | KEEP | bundle-size analysis | Dev-only, opt-in |