diff --git a/.github/workflows/test-action.yml b/.github/workflows/test-action.yml
index 69917cf..b4b3c9e 100644
--- a/.github/workflows/test-action.yml
+++ b/.github/workflows/test-action.yml
@@ -28,9 +28,8 @@ jobs:
          id: setup
          run: |
            sudo -E bash -c set
-           sudo add-apt-repository ppa:canonical-server/server-backports
            sudo apt-get update
-           sudo apt-get install --yes gnupg xz-utils expect systemd-container qemu-user-static qemu-utils qemu-system-arm libfdt-dev
+           sudo apt-get install --yes expect systemd-container qemu-user-static qemu-utils qemu-system-arm libfdt-dev binfmt-support
            echo "imagexz=$(basename "$(curl "https://downloads.raspberrypi.org/raspios_lite_armhf_latest" -s -L -I  -o /dev/null -w '%{url_effective}')")" >> $GITHUB_OUTPUT
            echo "image=$(echo "$(basename "$(curl "https://downloads.raspberrypi.org/raspios_lite_armhf_latest" -s -L -I  -o /dev/null -w '%{url_effective}')")" | sed -e 's/.xz//')" >> $GITHUB_OUTPUT
        - name: Cache Raspberry Pi OS 32bit image
diff --git a/tests/install-packages.bash b/tests/install-packages.bash
index 57f094e..8178ca7 100755
--- a/tests/install-packages.bash
+++ b/tests/install-packages.bash
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/bash
 
 export DEBIAN_FRONTEND="noninteractive"