diff --git a/src/utils/package-manager-detector.ts b/src/utils/package-manager-detector.ts
index d5f4a051..347f5d7c 100644
--- a/src/utils/package-manager-detector.ts
+++ b/src/utils/package-manager-detector.ts
@@ -125,9 +125,15 @@ function inferInstallFromPath(
     normalizedPath.includes('/global/') &&
     normalizedPath.includes('/node_modules/@kaitranntt/ccs')
   ) {
-    const pnpmFlatMatch = normalizedPath.match(/\/global\/([^/]+)\/node_modules\/@kaitranntt\/ccs/);
+    // pnpm v9+ nests a version segment plus a store-hash segment under
+    // global/ (e.g. global/v11/139e7-1a00df73ffb.../node_modules), while
+    // older pnpm uses a single segment (global/5/node_modules). Accept one
+    // or more segments but keep excluding yarn's global/lib/node_modules.
+    const pnpmFlatMatch = normalizedPath.match(
+      /\/global\/([^/]+(?:\/[^/]+)*)\/node_modules\/@kaitranntt\/ccs/
+    );
 
-    if (!pnpmFlatMatch || pnpmFlatMatch[1] === 'lib') {
+    if (!pnpmFlatMatch || pnpmFlatMatch[1].split('/')[0] === 'lib') {
       return null;
     }
 
diff --git a/tests/unit/utils/package-manager-detector.test.ts b/tests/unit/utils/package-manager-detector.test.ts
index 5bb1164a..d297c015 100644
--- a/tests/unit/utils/package-manager-detector.test.ts
+++ b/tests/unit/utils/package-manager-detector.test.ts
@@ -186,6 +186,45 @@ describe('package-manager-detector', () => {
     expect(install.prefix).toBe(join(tempRoot, 'custom-pnpm-root'));
   });
 
+  it('detects pnpm v9+ global store layouts with version and hash segments', () => {
+    const tempRoot = makeTempDir('ccs-install-detector-pnpm-global-v11-');
+    const packageRoot = join(
+      tempRoot,
+      'Library',
+      'pnpm',
+      'global',
+      'v11',
+      '139e7-1a00df73ffb-064d180929716eff',
+      'node_modules',
+      '@kaitranntt',
+      'ccs'
+    );
+
+    writePackage(packageRoot, '7.67.0-dev.9');
+
+    const install = detectCurrentInstall(join(packageRoot, 'dist', 'ccs.js'));
+
+    expect(install.manager).toBe('pnpm');
+    expect(install.prefix).toBe(join(tempRoot, 'Library', 'pnpm'));
+  });
+
+  it('detects Windows pnpm v10 global store layouts with nested segments', () => {
+    const install = detectCurrentInstall(
+      'C:/Users/dev/AppData/Local/pnpm/global/v10/b3b1c2de-9f88-4a7e/node_modules/@kaitranntt/ccs/dist/ccs.js'
+    );
+
+    expect(install.manager).toBe('pnpm');
+    expect(install.prefix).toBe('C:/Users/dev/AppData/Local/pnpm');
+  });
+
+  it('still excludes yarn global/lib/node_modules from pnpm detection', () => {
+    const install = detectCurrentInstall(
+      '/Users/dev/.yarn/global/lib/node_modules/@kaitranntt/ccs/dist/ccs.js'
+    );
+
+    expect(install.manager).not.toBe('pnpm');
+  });
+
   it('detects Windows npm globals without a lib directory', () => {
     const install = detectCurrentInstall(
       'C:/Program Files/node-prefix/node_modules/@kaitranntt/ccs/dist/ccs.js'