diff --git a/captain.yml b/captain.yml
index a6d4355766eab826f0b82de8232e410709be876c..ca717f5827a581b29cde53654ee65542ce79419c 100644
--- a/captain.yml
+++ b/captain.yml
@@ -21,6 +21,7 @@ portal-backend:
     - rm -rf $WORKSPACE/src/docker/run/target/
     - rm -rf $WORKSPACE/src/docker/run/config/
     - echo "Finished building portal-backend"
+    - curl -k -X POST --data-urlencode payload@$WORKSPACE/src/docker/run/slack.json https://hbps1.chuv.ch/slack/dev-activity
   test:
     - ./tests/pre-test-run.sh
     - ./tests/test-run.sh
diff --git a/src/docker/run/slack.json b/src/docker/run/slack.json
new file mode 100644
index 0000000000000000000000000000000000000000..313d8c5f67f2f0650c01d29b0d3b99f360e1ab6e
--- /dev/null
+++ b/src/docker/run/slack.json
@@ -0,0 +1 @@
+{"channel": "#dev-activity", "username": "webhookbot", "text": "Pushed a new version of hbpmip/portal-backend to Docker hub", "icon_emoji": ":whale:"}