diff --git a/clang-tools-extra/clang-doc/Representation.cpp b/clang-tools-extra/clang-doc/Representation.cpp
index 84233c36e15d9..2afff2929cf79 100644
--- a/clang-tools-extra/clang-doc/Representation.cpp
+++ b/clang-tools-extra/clang-doc/Representation.cpp
@@ -380,8 +380,8 @@ ClangDocContext::ClangDocContext(tooling::ExecutionContext *ECtx,
   this->SourceRoot = std::string(SourceRootDir);
   if (!RepositoryUrl.empty()) {
     this->RepositoryUrl = std::string(RepositoryUrl);
-    if (!RepositoryUrl.empty() && RepositoryUrl.find("http://") != 0 &&
-        RepositoryUrl.find("https://") != 0)
+    if (!RepositoryUrl.empty() && !RepositoryUrl.starts_with("http://") &&
+        !RepositoryUrl.starts_with("https://"))
       this->RepositoryUrl->insert(0, "https://");
   }
 }
diff --git a/lldb/unittests/Host/FileSystemTest.cpp b/lldb/unittests/Host/FileSystemTest.cpp
index 3b5ee7c8bc223..58887f6b2467e 100644
--- a/lldb/unittests/Host/FileSystemTest.cpp
+++ b/lldb/unittests/Host/FileSystemTest.cpp
@@ -93,7 +93,7 @@ class DummyFileSystem : public vfs::FileSystem {
     std::map<std::string, vfs::Status>::iterator I;
     std::string Path;
     bool isInPath(StringRef S) {
-      if (Path.size() < S.size() && S.find(Path) == 0) {
+      if (Path.size() < S.size() && S.starts_with(Path)) {
         auto LastSep = S.find_last_of('/');
         if (LastSep == Path.size() || LastSep == Path.size() - 1)
           return true;
diff --git a/llvm/unittests/Support/VirtualFileSystemTest.cpp b/llvm/unittests/Support/VirtualFileSystemTest.cpp
index e9b4ac3d92e1d..e9fd9671ea6ab 100644
--- a/llvm/unittests/Support/VirtualFileSystemTest.cpp
+++ b/llvm/unittests/Support/VirtualFileSystemTest.cpp
@@ -101,7 +101,7 @@ class DummyFileSystem : public vfs::FileSystem {
     std::map<std::string, vfs::Status>::iterator I;
     std::string Path;
     bool isInPath(StringRef S) {
-      if (Path.size() < S.size() && S.find(Path) == 0) {
+      if (Path.size() < S.size() && S.starts_with(Path)) {
         auto LastSep = S.find_last_of('/');
         if (LastSep == Path.size() || LastSep == Path.size() - 1)
           return true;