diff --git a/libc/kernel/uapi/linux/openvswitch.h b/libc/kernel/uapi/linux/openvswitch.h
index 1e2a412..1049c3d 100644
--- a/libc/kernel/uapi/linux/openvswitch.h
+++ b/libc/kernel/uapi/linux/openvswitch.h
@@ -466,6 +466,7 @@
   OVS_ACTION_ATTR_CHECK_PKT_LEN,
   OVS_ACTION_ATTR_ADD_MPLS,
   OVS_ACTION_ATTR_DEC_TTL,
+  OVS_ACTION_ATTR_DROP,
   __OVS_ACTION_ATTR_MAX,
 };
 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)