diff --git a/12.0.Dockerfile-python3.9 b/12.0.Dockerfile-python3.6
similarity index 97%
rename from 12.0.Dockerfile-python3.9
rename to 12.0.Dockerfile-python3.6
index c25050e720746966b70eacc72bb44d37b7719d91..aee379077aea74bfce7ac0089b486f1c064dc7ca 100644
--- a/12.0.Dockerfile-python3.9
+++ b/12.0.Dockerfile-python3.6
@@ -1,7 +1,7 @@
-FROM python:3.9-slim-buster
+FROM python:3.6-slim-buster
 MAINTAINER Le Filament <https://le-filament.com>
 
-ENV APT_DEPS='build-essential libldap2-dev libsasl2-dev libpq-dev python3-dev python3-wheel' \
+ENV APT_DEPS='build-essential libjpeg-dev libldap2-dev libsasl2-dev libpq-dev libxml2-dev libxslt1-dev python3-dev python3-wheel zlib1g-dev' \
     LANG=C.UTF-8 \
     LC_ALL=C.UTF-8 \
     PGDATABASE=odoo