diff --git a/log15/format.go b/log15/format.go
index be65f0531..320ad32fc 100644
--- a/log15/format.go
+++ b/log15/format.go
@@ -12,7 +12,7 @@ import (
 )
 
 const (
-	timeFormat     = "2006-01-02T15:04:05-0700"
+	timeFormat     = "2006-01-02T15:04:05.000-0700"
 	termTimeFormat = "01-02|15:04:05"
 	floatFormat    = 'f'
 	termMsgJust    = 40