diff --git a/setup/package.dfsrc b/setup/package.dfsrc
index 5bacc7f82ab..1277aa89426 100644
--- a/setup/package.dfsrc
+++ b/setup/package.dfsrc
@@ -1,6 +1,6 @@
 # Please note that this Dockerfile is used for testing nightly builds and should
 # not be used to deploy Odoo
-FROM debian:buster
+FROM debian:bookworm
 MAINTAINER Odoo S.A. <info@odoo.com>
 
 RUN apt-get update && \
@@ -23,15 +23,12 @@ RUN apt-get update -qq &&  \
 		libldap2-dev \
 		libsasl2-dev \
 		python3-pip \
+		python3-venv \
 		python3-wheel \
 		build-essential \
 		python3 -y && \
 	rm -rf /var/lib/apt/lists/*
 
-RUN pip3 install --upgrade pip
-
 COPY requirements.txt /opt/release/requirements.txt
 
-RUN pip3 install -r /opt/release/requirements.txt
-
 RUN echo "PS1=\"[\u@nightly-tests] # \"" > ~/.bashrc
diff --git a/setup/package.py b/setup/package.py
index 45441976c06..95e976c1d3e 100755
--- a/setup/package.py
+++ b/setup/package.py
@@ -295,11 +295,14 @@ class DockerTgz(Docker):
         logging.info('Start testing python tgz package')
         cmds = [
             'service postgresql start',
-            'pip3 install /data/src/odoo_%s.%s.tar.gz' % (VERSION, TSTAMP),
             'su postgres -s /bin/bash -c "createuser -s odoo"',
+            'su odoo -s /bin/bash -c "python3 -m venv /var/lib/odoo/odoovenv"',
+            'su odoo -s /bin/bash -c "/var/lib/odoo/odoovenv/bin/python3 -m pip install --upgrade pip"',
+            'su odoo -s /bin/bash -c "/var/lib/odoo/odoovenv/bin/python3 -m pip install -r /opt/release/requirements.txt"',
+            f'su odoo -s /bin/bash -c "/var/lib/odoo/odoovenv/bin/python3 -m pip install /data/src/odoo_{VERSION}.{TSTAMP}.tar.gz"',
             'su odoo -s /bin/bash -c "createdb mycompany"',
-            'su odoo -s /bin/bash -c "odoo -d mycompany -i base --stop-after-init"',
-            'su odoo -s /bin/bash -c "odoo -d mycompany --pidfile=/data/src/odoo.pid"',
+            'su odoo -s /bin/bash -c "/var/lib/odoo/odoovenv/bin/odoo -d mycompany -i base --stop-after-init"',
+            'su odoo -s /bin/bash -c "/var/lib/odoo/odoovenv/bin/odoo -d mycompany --pidfile=/data/src/odoo.pid"',
         ]
         self.run(' && '.join(cmds), self.args.build_dir, 'odoo-src-test-%s' % TSTAMP, user='root', detach=True, exposed_port=8069, timeout=300)
         self.test_odoo()