diff --git a/11.0/Dockerfile b/11.0/Dockerfile
index 6cf0d7e..325967e 100644
--- a/11.0/Dockerfile
+++ b/11.0/Dockerfile
@@ -36,7 +36,7 @@ RUN set -x; \
         && rm -rf /var/lib/apt/lists/* odoo.deb
 
 # Copy entrypoint script and Odoo configuration file
-RUN pip3 install num2words xlwt
+RUN pip3 install num2words xlwt phonenumbers
 COPY ./entrypoint.sh /
 COPY ./odoo.conf /etc/odoo/
 RUN chown odoo /etc/odoo/odoo.conf