diff --git a/.github/workflows/phpunit-32bits.yml b/.github/workflows/phpunit-32bits.yml
index 3b03c00184b45..5458b8696dbc7 100644
--- a/.github/workflows/phpunit-32bits.yml
+++ b/.github/workflows/phpunit-32bits.yml
@@ -36,7 +36,7 @@ jobs:
           sudo apt-get install -y ffmpeg imagemagick libmagickcore-6.q16-3-extra
 
       - name: Set up php ${{ matrix.php-versions }}
-        uses: shivammathur/setup-php@v2
+        uses: shivammathur/setup-php@9c77701ae57b0c47f6732beebfbdec76e4e5c90a #debian bookworm fix
         with:
           php-version: ${{ matrix.php-versions }}
           extensions: ctype, curl, dom, fileinfo, gd, imagick, intl, json, mbstring, openssl, pdo_sqlite, posix, sqlite, xml, zip, apcu