diff --git a/stdlib/archive/tests/invalid_cases.sh b/stdlib/archive/tests/invalid_cases.sh
index 34900f6..3fa24c9 100755
--- a/stdlib/archive/tests/invalid_cases.sh
+++ b/stdlib/archive/tests/invalid_cases.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 INVOCATION_FILE=tmp_archivetest_invocation_file.json
 
diff --git a/stdlib/archive/tests/valid_cases.sh b/stdlib/archive/tests/valid_cases.sh
index 8c2b283..c1fe566 100755
--- a/stdlib/archive/tests/valid_cases.sh
+++ b/stdlib/archive/tests/valid_cases.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 INVOCATION_FILE=tmp_archivetest_invocation_file.json
 
diff --git a/stdlib/git/tests/simple.sh b/stdlib/git/tests/simple.sh
index a32f03d..2a4d0a7 100755
--- a/stdlib/git/tests/simple.sh
+++ b/stdlib/git/tests/simple.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 INVOCATION_FILE=$PWD/tmp_gittest_invocation_file.json