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PiperOrigin-RevId: 910448898
diff --git a/codelab/escaping.cc b/codelab/escaping.cc
index 928498f..611a34a 100644
--- a/codelab/escaping.cc
+++ b/codelab/escaping.cc
@@ -14,6 +14,10 @@
 
 #include "./escaping.h"
 
+#include <cstddef>
+#include <string>
+#include <string_view>
+
 namespace codelab {
 
 std::string Escape(std::string_view str) {