diff --git a/11.0/Dockerfile b/11.0/Dockerfile
index 4e9c814..3a05137 100644
--- a/11.0/Dockerfile
+++ b/11.0/Dockerfile
@@ -35,7 +35,7 @@ RUN set -x; \
         && rm -rf /var/lib/apt/lists/* odoo.deb
 
 # Copy entrypoint script and Odoo configuration file
-RUN pip3 install num2words
+RUN pip3 install num2words xlwt
 COPY ./entrypoint.sh /
 COPY ./odoo.conf /etc/odoo/
 RUN chown odoo /etc/odoo/odoo.conf