diff --git a/event.c b/event.c
index e50616c4..ed9a8981 100644
--- a/event.c
+++ b/event.c
@@ -3632,6 +3632,14 @@ event_base_dump_events(struct event_base *base, FILE *output)
 	EVBASE_RELEASE_LOCK(base, th_base_lock);
 }
 
+void
+event_base_active_by_fd(struct event_base *base, evutil_socket_t fd, short events)
+{
+	EVBASE_ACQUIRE_LOCK(base, th_base_lock);
+	evmap_io_active_(base, fd, events);
+	EVBASE_RELEASE_LOCK(base, th_base_lock);
+}
+
 void
 event_base_add_virtual_(struct event_base *base)
 {
diff --git a/include/event2/event.h b/include/event2/event.h
index 609db9d9..2c93e9ab 100644
--- a/include/event2/event.h
+++ b/include/event2/event.h
@@ -1464,6 +1464,15 @@ void event_set_mem_functions(
 void event_base_dump_events(struct event_base *, FILE *);
 
 
+/**
+   Activates all events for the given fd and event mask.
+
+   @param fd An fd or signal
+   @param events One or more EV_* flags
+ */
+void event_base_active_by_fd(struct event_base *base, evutil_socket_t fd, short events);
+
+
 /**
  * Callback for iterating events in an event base via event_base_foreach_event
  */