diff --git a/readline/history.go b/readline/history.go
index db99fad0..d0138cd9 100644
--- a/readline/history.go
+++ b/readline/history.go
@@ -132,7 +132,7 @@ func (h *History) Save() error {
 
 	tmpFile := h.Filename + ".tmp"
 
-	f, err := os.OpenFile(tmpFile, os.O_CREATE|os.O_WRONLY|os.O_TRUNC|os.O_APPEND, 0o666)
+	f, err := os.OpenFile(tmpFile, os.O_CREATE|os.O_WRONLY|os.O_TRUNC|os.O_APPEND, 0o600)
 	if err != nil {
 		return err
 	}