diff --git a/integration-tests/Dockerfile b/integration-tests/Dockerfile
index c1c73d8..eb116eb 100644
--- a/integration-tests/Dockerfile
+++ b/integration-tests/Dockerfile
@@ -1,5 +1,5 @@
 # Systemd inside a Docker container, for CI only
-ARG BASE_IMAGE=ubuntu:20.04
+ARG BASE_IMAGE=ubuntu:22.04
 FROM $BASE_IMAGE
 
 # DEBIAN_FRONTEND is set to avoid being asked for input and hang during build:
@@ -29,8 +29,8 @@ RUN systemctl set-default multi-user.target
 STOPSIGNAL SIGRTMIN+3
 
 # Uncomment these lines for a development install
-#ENV TLJH_BOOTSTRAP_DEV=yes
-#ENV TLJH_BOOTSTRAP_PIP_SPEC=/srv/src
-#ENV PATH=/opt/tljh/hub/bin:${PATH}
+# ENV TLJH_BOOTSTRAP_DEV=yes
+# ENV TLJH_BOOTSTRAP_PIP_SPEC=/srv/src
+# ENV PATH=/opt/tljh/hub/bin:${PATH}
 
 CMD ["/bin/bash", "-c", "exec /lib/systemd/systemd --log-target=journal 3>&1"]