diff --git a/log/log.go b/log/log.go
index 00516e78..bc94e779 100644
--- a/log/log.go
+++ b/log/log.go
@@ -13,7 +13,7 @@ import (
 )
 
 var (
-	DefaultTimestampFormat = time.RFC3339
+	DefaultTimestampFormat = time.RFC3339Nano
 )
 
 type JSONFormatter struct {