diff --git a/ngx_rtmp_notify_module.c b/ngx_rtmp_notify_module.c
index d724e74..f463a19 100644
--- a/ngx_rtmp_notify_module.c
+++ b/ngx_rtmp_notify_module.c
@@ -84,6 +84,7 @@ typedef struct {
     u_char                                      name[NGX_RTMP_MAX_NAME];
     u_char                                      args[NGX_RTMP_MAX_ARGS];
     ngx_event_t                                 update_evt;
+    time_t                                      start;
 } ngx_rtmp_notify_ctx_t;
 
 
@@ -682,6 +683,7 @@ ngx_rtmp_notify_update_create(ngx_rtmp_session_t *s, void *arg,
 
     b = ngx_create_temp_buf(pool,
                             sizeof("&call=update") + sfx.len +
+                            sizeof("&time=") + NGX_TIME_T_LEN +
                             sizeof("&name=") + name_len * 3 +
                             1 + args_len);
     if (b == NULL) {
@@ -695,6 +697,10 @@ ngx_rtmp_notify_update_create(ngx_rtmp_session_t *s, void *arg,
                          sizeof("&call=update") - 1);
     b->last = ngx_cpymem(b->last, sfx.data, sfx.len);
 
+    b->last = ngx_cpymem(b->last, (u_char *) "&time=",
+                         sizeof("&time=") - 1);
+    b->last = ngx_sprintf(b->last, "%T", ngx_cached_time->sec - ctx->start);
+
     if (name_len) {
         b->last = ngx_cpymem(b->last, (u_char*) "&name=", sizeof("&name=") - 1);
         b->last = (u_char*) ngx_escape_uri(b->last, ctx->name, name_len,
@@ -1132,6 +1138,8 @@ ngx_rtmp_notify_init(ngx_rtmp_session_t *s,
         return;
     }
 
+    ctx->start = ngx_cached_time->sec;
+
     e = &ctx->update_evt;
 
     e->data = s->connection;