diff --git a/event.c b/event.c
index 16b17c19..8c04f547 100644
--- a/event.c
+++ b/event.c
@@ -435,6 +435,22 @@ update_time_cache(struct event_base *base)
 	    gettime(base, &base->tv_cache);
 }
 
+int
+event_base_update_cache_time(struct event_base *base)
+{
+
+	if (!base) {
+		base = current_base;
+		if (!current_base)
+			return -1;
+	}
+
+	EVBASE_ACQUIRE_LOCK(base, th_base_lock);
+	update_time_cache(base);
+	EVBASE_RELEASE_LOCK(base, th_base_lock);
+	return 0;
+}
+
 struct event_base *
 event_init(void)
 {
diff --git a/include/event2/event.h b/include/event2/event.h
index 122eec08..cccb5fd9 100644
--- a/include/event2/event.h
+++ b/include/event2/event.h
@@ -1255,6 +1255,20 @@ void event_base_dump_events(struct event_base *, FILE *);
 int event_base_gettimeofday_cached(struct event_base *base,
     struct timeval *tv);
 
+/** Update cached_tv in the 'base' to the current time
+ *
+ * You can use this function is useful for selectively increasing
+ * the accuracy of the cached time value in 'base' during callbacks
+ * that take a long time to execute.
+ *
+ * This function has no effect if the base is currently not in its
+ * event loop, or if timeval caching is disabled via
+ * EVENT_BASE_FLAG_NO_CACHE_TIME.
+ *
+ * @return 0 on success, -1 on failure
+ */
+int event_base_update_cache_time(struct event_base *base);
+
 #ifdef __cplusplus
 }
 #endif