diff --git a/include/version.h b/include/version.h
index c0a21b58..7031ba1d 100644
--- a/include/version.h
+++ b/include/version.h
@@ -22,6 +22,7 @@
 
 #include <string>
 #include <vector>
+#include <iostream>
 
 namespace kiwix
 {