diff --git a/sphinx/Dockerfile b/sphinx/Dockerfile
index 337946b..210046e 100644
--- a/sphinx/Dockerfile
+++ b/sphinx/Dockerfile
@@ -1,24 +1,24 @@
 ARG REGISTRY=swh-jenkins
 FROM $REGISTRY/base-buster
 
 USER root
 RUN DEBIAN_FRONTEND=noninteractive apt-get update && \
   apt-get install -y --no-install-recommends \
     crudini \
     dia \
     graphviz \
     inkscape \
     libffi-dev \
     maven \
     make \
     myrepos \
     plantuml \
     postgresql-autodoc \
     rsync \
     tox \
   && rm -rf /var/lib/apt/lists/*
 
 USER jenkins
 
-RUN python3 -m pip install --user --upgrade \
+RUN python3 -m pip install --user --upgrade --no-warn-script-location \
   pre-commit