diff --git a/clang-tools-extra/clangd/unittests/TUSchedulerTests.cpp b/clang-tools-extra/clangd/unittests/TUSchedulerTests.cpp
index fd56b0d75ae209..4e95fcfea91c19 100644
--- a/clang-tools-extra/clangd/unittests/TUSchedulerTests.cpp
+++ b/clang-tools-extra/clangd/unittests/TUSchedulerTests.cpp
@@ -264,7 +264,7 @@ TEST_F(TUSchedulerTests, Debounce) {
   Notification N;
   updateWithDiags(S, Path, "auto (timed out)", WantDiagnostics::Auto,
                   [&](std::vector<Diag>) { N.notify(); });
-  EXPECT_TRUE(N.wait(timeoutSeconds(1)));
+  EXPECT_TRUE(N.wait(timeoutSeconds(5)));
 
   // Once we start shutting down the TUScheduler, this one becomes a dead write.
   updateWithDiags(S, Path, "auto (discarded)", WantDiagnostics::Auto,