diff --git a/testing/test_dart_native_resolver.h b/testing/test_dart_native_resolver.h
index a54ba6ab1e62e..bd0a3fe0882dd 100644
--- a/testing/test_dart_native_resolver.h
+++ b/testing/test_dart_native_resolver.h
@@ -8,6 +8,7 @@
 #include <functional>
 #include <map>
 #include <memory>
+#include <string>
 
 #include "flutter/fml/macros.h"
 #include "third_party/dart/runtime/include/dart_api.h"
diff --git a/third_party/accessibility/ax/ax_table_info.h b/third_party/accessibility/ax/ax_table_info.h
index 53086c42693c1..ef9266f2e5c41 100644
--- a/third_party/accessibility/ax/ax_table_info.h
+++ b/third_party/accessibility/ax/ax_table_info.h
@@ -7,6 +7,7 @@
 
 #include <map>
 #include <set>
+#include <string>
 #include <unordered_map>
 #include <vector>