diff --git a/test/test.sh b/test/test.sh
index f8a9d3e5..702d2a66 100644
--- a/test/test.sh
+++ b/test/test.sh
@@ -1,3 +1,4 @@
+#!/bin/sh
 # run this from project directory
 rm -rf ./{build,build2,install_dir}
 cmake -S. -Bbuild -DCMAKE_BUILD_TYPE=Release -DFETCHCONTENT_QUIET=OFF --log-level=DEBUG -DBOOST_UT_ENABLE_INSTALL=1
diff --git a/test/test_download_all.sh b/test/test_download_all.sh
index 9d246e16..bfe87a28 100644
--- a/test/test_download_all.sh
+++ b/test/test_download_all.sh
@@ -1,3 +1,4 @@
+#!/bin/sh
 # run this from project directory
 rm -rf ./{build,build2,install_dir}
 cmake -S. -Bbuild -DCMAKE_BUILD_TYPE=Release -DFETCHCONTENT_QUIET=OFF -DCPM_DOWNLOAD_ALL=1 --log-level=DEBUG -DBOOST_UT_ENABLE_INSTALL=1