diff --git a/tz.cpp b/tz.cpp
index d33e204..446cf4b 100644
--- a/tz.cpp
+++ b/tz.cpp
@@ -87,6 +87,7 @@
 #include <memory>
 #include <sstream>
 #include <string>
+#include <tuple>
 #include <vector>
 #include <sys/stat.h>