diff --git a/build.sh b/build.sh
index 890f6f5..99f6c39 100755
--- a/build.sh
+++ b/build.sh
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 pyinstaller --noconfirm --log-level=INFO \
     --onefile --windowed \
     --name="NodeMCU PyFlasher" \