diff --git a/clang-tools-extra/clangd/clients/clangd-vscode/src/extension.ts b/clang-tools-extra/clangd/clients/clangd-vscode/src/extension.ts
--- a/clang-tools-extra/clangd/clients/clangd-vscode/src/extension.ts
+++ b/clang-tools-extra/clangd/clients/clangd-vscode/src/extension.ts
@@ -69,7 +69,9 @@
     const serverOptions: vscodelc.ServerOptions = clangd;
 
     const filePattern: string = '**/*.{' +
-        ['cpp', 'c', 'cc', 'cxx', 'c++', 'm', 'mm', 'h', 'hh', 'hpp', 'hxx', 'inc'].join() + '}';
+        ['cpp', 'c', 'cc', 'cu', 'cxx', 'c++', 'm', 'mm',
+            'h', 'hh', 'hpp', 'hxx', 'inc'].join()
+        + '}';
     const clientOptions: vscodelc.LanguageClientOptions = {
         // Register the server for C/C++ files
         documentSelector: [{ scheme: 'file', pattern: filePattern }],