diff --git a/cad/openfpgaloader/files/patch-src_xvc__server.cpp b/cad/openfpgaloader/files/patch-src_xvc__server.cpp
new file mode 100644
index 000000000000..177f9de4d601
--- /dev/null
+++ b/cad/openfpgaloader/files/patch-src_xvc__server.cpp
@@ -0,0 +1,10 @@
+--- src/xvc_server.cpp.orig	2026-03-02 17:34:32 UTC
++++ src/xvc_server.cpp
+@@ -9,6 +9,7 @@
+ #include <errno.h>
+ #include <netinet/tcp.h>
+ #include <unistd.h>
++#include <sys/socket.h> // for send
+ 
+ #include <cstring>
+ #include <stdexcept>