diff --git a/googletest/src/gtest.cc b/googletest/src/gtest.cc
index 99b22ed..85d45b5 100644
--- a/googletest/src/gtest.cc
+++ b/googletest/src/gtest.cc
@@ -43,6 +43,7 @@
 #include <algorithm>
 #include <chrono>  // NOLINT
 #include <cmath>
+#include <csignal>  // NOLINT: raise(3) is used on some platforms
 #include <cstdint>
 #include <cstdlib>
 #include <cstring>