diff --git a/src/socket.c b/src/socket.c
index 8f684b2..65498f2 100644
--- a/src/socket.c
+++ b/src/socket.c
@@ -35,6 +35,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <fcntl.h>
+#include <sys/time.h>
 
 #ifdef _WIN32
 #  include <winsock2.h>
diff --git a/src/sync.c b/src/sync.c
index 3fefffe..ab96fb7 100644
--- a/src/sync.c
+++ b/src/sync.c
@@ -34,6 +34,7 @@
 #include <assert.h>
 #include <stdlib.h>
 #include <stdio.h>
+#include <sys/time.h>
 
 #ifndef _WIN32
 #include <sys/select.h>