diff --git a/tox/Dockerfile b/tox/Dockerfile
index 04ebb29..551654f 100644
--- a/tox/Dockerfile
+++ b/tox/Dockerfile
@@ -1,15 +1,15 @@
 # syntax=docker/dockerfile:experimental
 ARG REGISTRY=swh-jenkins
 FROM $REGISTRY/base-buster
 LABEL maintainer="SoftwareHeritage"
 
 USER jenkins
 
 RUN mkdir -p /home/jenkins/.cache/pip
 
 RUN --mount=type=cache,id=pip-cache,target=/home/jenkins/.cache/pip,uid=1000,gid=1000 \
   python3 -m pip install --user --upgrade \
-  pip setuptools wheel twine tox detox
+  pip setuptools wheel twine tox
 RUN --mount=type=cache,id=pip-cache,target=/home/jenkins/.cache/pip,uid=1000,gid=1000 \
   python3 -m pip install --user --upgrade --no-warn-script-location \
   Radon pylint coverage codespell pyarcanist