diff --git a/lib/includes/spdylay/spdylay.h b/lib/includes/spdylay/spdylay.h
index b5b03c7..4b456a1 100644
--- a/lib/includes/spdylay/spdylay.h
+++ b/lib/includes/spdylay/spdylay.h
@@ -428,6 +428,14 @@ int spdylay_submit_response(spdylay_session *session,
                             int32_t stream_id, const char **nv,
                             spdylay_data_provider *data_prd);
 
+/*
+ * Submits RST_STREAM frame to cancel/reset stream |stream_id| with
+ * status code |status_code|. This function returns 0 if it succeeds,
+ * or negative error code.
+ */
+int spdylay_submit_cancel(spdylay_session *session, int32_t stream_id,
+                          uint32_t status_code);
+
 /*
  * Submits PING frame. This function returns 0 if it succeeds, or
  * negative error code.
diff --git a/lib/spdylay_session.c b/lib/spdylay_session.c
index 57501fd..a65f763 100644
--- a/lib/spdylay_session.c
+++ b/lib/spdylay_session.c
@@ -1486,6 +1486,12 @@ int spdylay_submit_ping(spdylay_session *session)
                                   spdylay_session_get_next_unique_id(session));
 }
 
+int spdylay_submit_cancel(spdylay_session *session, int32_t stream_id,
+                          uint32_t status_code)
+{
+  return spdylay_session_add_rst_stream(session, stream_id, status_code);
+}
+
 int spdylay_submit_goaway(spdylay_session *session)
 {
   return spdylay_session_add_goaway(session, session->last_recv_stream_id);