diff --git a/docs/src/timer.rst b/docs/src/timer.rst
index 31d733ef..8e11f257 100644
--- a/docs/src/timer.rst
+++ b/docs/src/timer.rst
@@ -42,6 +42,9 @@ API
     If `repeat` is non-zero, the callback fires first after `timeout`
     milliseconds and then repeatedly after `repeat` milliseconds.
 
+    .. note::
+        Does not update the event loop's concept of "now". See :c:func:`uv_update_time` for more information.
+
 .. c:function:: int uv_timer_stop(uv_timer_t* handle)
 
     Stop the timer, the callback will not be called anymore.