diff --git a/event_message.go b/event_message.go
index 022e606..310b7b0 100644
--- a/event_message.go
+++ b/event_message.go
@@ -10,7 +10,7 @@ import (
 )
 
 // NatsEventTimeFormat time format for NatsEvent 'time' field
-const NatsEventTimeFormat = time.RFC3339
+const NatsEventTimeFormat = time.RFC3339Nano
 
 type (
 	// NatsEvent :nodoc: