diff --git a/examples/workflow-test/configs/utils.ts b/examples/workflow-test/configs/utils.ts
index 8f05d01..62cad5a 100644
--- a/examples/workflow-test/configs/utils.ts
+++ b/examples/workflow-test/configs/utils.ts
@@ -45,16 +45,6 @@ export function getRepoPath(repoName: string): string {
     return path.resolve(getRepoDir(), repoName);
 }
 
-// TEMPORARY: remove once all GLSP repos are migrated to pnpm.
-// During the migration a cloned integration repo may still be yarn-based. The package manager
-// determines how a binary is launched in a sub-package: pnpm's script shorthand only runs
-// package.json scripts, so the `theia` binary must be invoked via `pnpm exec`, whereas yarn classic
-// runs binaries directly and has no `exec` command. Detect the lockfile so callers can adapt.
-// Mirrors the yarn.lock-based detection in scripts/setup.ts.
-export function isYarnRepo(repoName: string): boolean {
-    return existsSync(path.resolve(getRepoPath(repoName), 'yarn.lock'));
-}
-
 export function getPort(envVar: string): number {
     const val = process.env[envVar];
     if (val) {
diff --git a/examples/workflow-test/configs/webserver.config.ts b/examples/workflow-test/configs/webserver.config.ts
index 97d85a6..142c6c8 100644
--- a/examples/workflow-test/configs/webserver.config.ts
+++ b/examples/workflow-test/configs/webserver.config.ts
@@ -15,7 +15,7 @@
  ********************************************************************************/
 
 import { PlaywrightTestConfig } from '@playwright/test';
-import { ProjectName, getBrowserServerBundlePath, getPort, getRepoDir, isYarnRepo, needsGlspServer } from './utils';
+import { ProjectName, getBrowserServerBundlePath, getPort, getRepoDir, needsGlspServer } from './utils';
 
 type WebServerConfig = Extract<NonNullable<PlaywrightTestConfig['webServer']>, unknown[]>[number];
 
@@ -41,7 +41,6 @@ export function buildWebServers(activeProjects: ProjectName[]): PlaywrightTestCo
     const standaloneBrowserPort = getPort('STANDALONE_BROWSER_PORT');
     const theiaPort = getPort('THEIA_PORT');
     const browserServerBundle = getBrowserServerBundlePath();
-    const theiaBin = isYarnRepo('glsp-theia-integration') ? 'theia' : 'exec theia';
     const configs: Partial<Record<ProjectName, ProjectServerConfig>> = {
         standalone: {
             command: `${repo} client start --external-server --no-open`,
@@ -56,12 +55,7 @@ export function buildWebServers(activeProjects: ProjectName[]): PlaywrightTestCo
             path: '/diagram.html'
         },
         theia: {
-            // TEMPORARY: drop the `isYarnRepo` branch once glsp-theia-integration is migrated to pnpm.
-            // The command resolves to `<pm> browser <exec?> theia start ...` in the cloned repo. Under
-            // pnpm the `theia` binary must be launched via `pnpm exec` (the script shorthand only runs
-            // package.json scripts, else it fails with ERR_PNPM_RECURSIVE_EXEC_FIRST_FAIL); yarn classic
-            // runs binaries directly and has no `exec` command.
-            command: `${repo} theia run browser ${theiaBin} start --WF_GLSP=${glspServerPort} --WF_PATH=workflow --glspDebug`,
+            command: `${repo} theia run browser exec theia start --WF_GLSP=${glspServerPort} --WF_PATH=workflow --glspDebug`,
             port: theiaPort
         }
     };
diff --git a/examples/workflow-test/scripts/setup.ts b/examples/workflow-test/scripts/setup.ts
index 650df18..d63b678 100644
--- a/examples/workflow-test/scripts/setup.ts
+++ b/examples/workflow-test/scripts/setup.ts
@@ -14,7 +14,7 @@
  * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
  ********************************************************************************/
 import { execSync } from 'child_process';
-import { copyFileSync, existsSync, readFileSync, writeFileSync } from 'fs';
+import { copyFileSync, readFileSync, writeFileSync } from 'fs';
 import { resolve } from 'path';
 
 const args = process.argv.slice(2);
@@ -56,36 +56,6 @@ if (vscode || all) {
 
 run(`${repo} clone ${repos.join(' ')}`);
 
-if (repos.includes('glsp-vscode-integration')) {
-    // The glsp-vscode-integration repo is a lerna monorepo that gets cloned into the `.repositories`
-    // directory of this (also lerna-based) repo. Without an `nx.json` marking the repo root, lerna
-    // walks up the directory tree, detects the nesting and fails. Adding an empty `nx.json` tells
-    // lerna to stop the lookup at the repo root.
-    const nxJson = resolve(rootDir, '.repositories', 'glsp-vscode-integration', 'nx.json');
-    console.log(`Adding ${nxJson}`);
-    writeFileSync(nxJson, '{}');
-}
-
-// TEMPORARY: remove once all GLSP repos are migrated to pnpm.
-// Yarn classic (1.x) walks up the directory tree looking for a `packageManager` field. Since this
-// repo's root package.json declares `pnpm@<version>`, a `yarn install` inside a cloned (yarn-based)
-// repo under `.repositories` would find that pnpm pin, misparse it as `yarn@pnpm@<version>`, and
-// abort. Pin each cloned yarn repo to the local yarn version so the lookup stops at the repo itself.
-const yarnVersion = execSync('yarn --version', { cwd: rootDir }).toString().trim();
-for (const cloned of repos) {
-    const repoDir = resolve(rootDir, '.repositories', cloned);
-    const pkgPath = resolve(repoDir, 'package.json');
-    if (!existsSync(resolve(repoDir, 'yarn.lock')) || !existsSync(pkgPath)) {
-        continue;
-    }
-    const pkg = JSON.parse(readFileSync(pkgPath, 'utf-8'));
-    if (!pkg.packageManager) {
-        pkg.packageManager = `yarn@${yarnVersion}`;
-        writeFileSync(pkgPath, `${JSON.stringify(pkg, null, 2)}\n`);
-        console.log(`Pinned ${cloned} packageManager to yarn@${yarnVersion}`);
-    }
-}
-
 if (!skipBuild) {
     run(`${repo} build`);
     if (repos.includes('glsp-vscode-integration')) {