diff --git a/flash.sh b/flash.sh
index 4562171..3bd48b5 100755
--- a/flash.sh
+++ b/flash.sh
@@ -1,3 +1,4 @@
+#!/bin/bash
 set -o pipefail
 if ! command -v openocd &> /dev/null
 then
diff --git a/flash_experimental.sh b/flash_experimental.sh
index 4d460bb..4ae4b5e 100755
--- a/flash_experimental.sh
+++ b/flash_experimental.sh
@@ -1,3 +1,4 @@
+#!/bin/bash
 set -o pipefail
 if ! command -v openocd &> /dev/null
 then