diff --git a/src/socket.c b/src/socket.c
index 50e0a5f..538a742 100644
--- a/src/socket.c
+++ b/src/socket.c
@@ -31,6 +31,7 @@
 #include <time.h>
 #include <unistd.h>
 #include <netinet/in.h>
+#include <sys/select.h>
 #include <sys/socket.h>
 #include <sys/types.h>