diff --git a/tools/cargo-test-in-docker b/tools/cargo-test-in-docker
index 945294f..e442984 100755
--- a/tools/cargo-test-in-docker
+++ b/tools/cargo-test-in-docker
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Run this to run opgpcard (tools directory) test suite inside a
 # Docker container with a virtual smartcard running. The test suite
diff --git a/tools/subplot/test-in-docker.sh b/tools/subplot/test-in-docker.sh
index 13bf2e1..c24ae9a 100755
--- a/tools/subplot/test-in-docker.sh
+++ b/tools/subplot/test-in-docker.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Run "cargo test" inside a Docker container with virtual cards
 # installed and running. This will allow at least rudimentary testing