diff --git a/src/greenworks_zip.cc b/src/greenworks_zip.cc
index 1ee396a..fc8833f 100644
--- a/src/greenworks_zip.cc
+++ b/src/greenworks_zip.cc
@@ -50,6 +50,7 @@
 #include <dirent.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+#include <time.h>
 #include <unistd.h>
 #endif