Internal change PiperOrigin-RevId: 999828068

diff --git a/src/google/protobuf/compiler/python/plugin_unittest.cc b/src/google/protobuf/compiler/python/plugin_unittest.cc
index b905cee..cb955fb 100644
--- a/src/google/protobuf/compiler/python/plugin_unittest.cc
+++ b/src/google/protobuf/compiler/python/plugin_unittest.cc

@@ -14,6 +14,7 @@
 
 #include "google/protobuf/testing/file.h"
 #include "google/protobuf/testing/file.h"
+#include "google/protobuf/descriptor.pb.h"
 #include <gtest/gtest.h>
 #include "absl/log/absl_check.h"
 #include "absl/strings/match.h"