diff --git a/lib/swoc/include/swoc/swoc_ip.h b/lib/swoc/include/swoc/swoc_ip.h
index 572594f07db..b6345814c56 100644
--- a/lib/swoc/include/swoc/swoc_ip.h
+++ b/lib/swoc/include/swoc/swoc_ip.h
@@ -10,6 +10,7 @@
 #include <netinet/in.h>
 #include <string_view>
 #include <variant>
+#include <array>
 
 #include "swoc/swoc_version.h"
 #include "swoc/TextView.h"