--- citus-13.1.0/src/backend/distributed/commands/multi_copy.c.orig
+++ citus-13.1.0/src/backend/distributed/commands/multi_copy.c
@@ -45,6 +45,7 @@
 
 #include <arpa/inet.h> /* for htons */
 #include <netinet/in.h> /* for htons */
+#include <sys/stat.h>
 #include <string.h>
 
 #include "postgres.h"