diff --git a/t/Dockerfile b/t/Dockerfile
index 20516f8..4b5d13a 100644
--- a/t/Dockerfile
+++ b/t/Dockerfile
@@ -1,16 +1,15 @@
-# DOCKER_NAME=lua-ngcp-kamailio-jessie
-FROM docker.mgm.sipwise.com/sipwise-jessie:latest
+# DOCKER_NAME=lua-ngcp-kamailio-stretch
+FROM docker.mgm.sipwise.com/sipwise-stretch:latest
 
 # Important! Update this no-op ENV variable when this Dockerfile
 # is updated with the current date. It will force refresh of all
 # of the base images and things like `apt-get update` won't be using
 # old cached versions when the Dockerfile is built.
-ENV REFRESHED_AT 2017-09-25
+ENV REFRESHED_AT 2018-01-16
 
 # files that get-code generates
 COPY t/sources.list.d/builddeps.list /etc/apt/sources.list.d/
 COPY t/sources.list.d/preferences /etc/apt/preferences.d/
-RUN echo "deb https://deb.sipwise.com/autobuild internal-jessie main" >>/etc/apt/sources.list
 
 RUN apt-get update && apt-get install --assume-yes \
 	lua5.1 lua-unit lua-cjson lua-curl lua-lemock lua-logging lua-argparse lua-check python-xmlrunner
@@ -27,15 +26,15 @@ WORKDIR /code/
 #
 # you need to put the proper NGCP sources at t/sources.list.d/builddeps.list
 # for instance, trunk:
-# echo "deb https://deb.sipwise.com/autobuild/ release-trunk-jessie main" > t/sources.list.d/builddeps.list
+# echo "deb https://deb.sipwise.com/autobuild/ release-trunk-stretch main" > t/sources.list.d/builddeps.list
 #
-# % docker build --tag="lua-ngcp-kamailio-jessie" -f t/Dockerfile .
-# % docker run --rm -i -t -v $(pwd):/code:rw lua-ngcp-kamailio-jessie:latest bash
+# % docker build --tag="lua-ngcp-kamailio-stretch" -f t/Dockerfile .
+# % docker run --rm -i -t -v $(pwd):/code:rw lua-ngcp-kamailio-stretch:latest bash
 #
 # Use the existing docker image:
-# % docker pull docker.mgm.sipwise.com/lua-ngcp-kamailio-jessie
+# % docker pull docker.mgm.sipwise.com/lua-ngcp-kamailio-stretch
 # NOTE: run the following command from root folder of git repository:
-# % docker run --rm -i -t -v $(pwd):/code:rw docker.mgm.sipwise.com/lua-ngcp-kamailio-jessie:latest bash
+# % docker run --rm -i -t -v $(pwd):/code:rw docker.mgm.sipwise.com/lua-ngcp-kamailio-stretch:latest bash
 #
 # Inside docker (the command is in history, just press UP button):
 #   ./t/testrunner