diff --git a/libc/kernel/uapi/linux/tcp.h b/libc/kernel/uapi/linux/tcp.h
index 13354e6..0bf9559 100644
--- a/libc/kernel/uapi/linux/tcp.h
+++ b/libc/kernel/uapi/linux/tcp.h
@@ -87,6 +87,8 @@
 #define TCP_FASTOPEN_CONNECT 30
 #define TCP_ULP 31
 #define TCP_MD5SIG_EXT 32
+#define TCP_FASTOPEN_KEY 33
+#define TCP_FASTOPEN_NO_COOKIE 34
 struct tcp_repair_opt {
   __u32 opt_code;
   __u32 opt_val;