diff --git a/include/git2/sys/transport.h b/include/git2/sys/transport.h
index 96a35d0..310b345 100644
--- a/include/git2/sys/transport.h
+++ b/include/git2/sys/transport.h
@@ -14,6 +14,7 @@
 #include "git2/strarray.h"
 #include "git2/transport.h"
 #include "git2/types.h"
+#include "git2/oidarray.h"
 
 /**
  * @file git2/sys/transport.h