diff --git a/.gitignore b/.gitignore
old mode 100644
new mode 100755
index a3b5fa5..61efa50
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
+# ignore backup files
+._*
 # ignore the ESP32 MicroPython binary
 esp32*.bin
 # ignore the development config file