diff --git a/clang-tools-extra/clangd/ClangdServer.h b/clang-tools-extra/clangd/ClangdServer.h
--- a/clang-tools-extra/clangd/ClangdServer.h
+++ b/clang-tools-extra/clangd/ClangdServer.h
@@ -130,8 +130,11 @@
     llvm::Optional<std::string> ResourceDir = llvm::None;
 
     /// Time to wait after a new file version before computing diagnostics.
-    DebouncePolicy UpdateDebounce =
-        DebouncePolicy::fixed(std::chrono::milliseconds(500));
+    DebouncePolicy UpdateDebounce = DebouncePolicy{
+        /*Min=*/std::chrono::milliseconds(50),
+        /*Max=*/std::chrono::milliseconds(500),
+        /*RebuildRatio=*/1,
+    };
 
     bool SuggestMissingIncludes = false;