diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 52ee4122e6f613009334f57ce6e2c584a522333f..0d39f9e18897003d90f475a7012087a71b533d1d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -15,6 +15,7 @@ cache:
 
 stages:
     - build
+    - test
     - release
 
 
@@ -49,6 +50,22 @@ build-jpp-latest:
     script:
         - *virtualenv_definition
 
+test-jpp-12.1.0:
+    image: docker.km3net.de/jpp:v12-1-0
+    stage: build
+    script:
+        - *virtualenv_definition
+        - pip install -U pytest
+        - pytest
+
+test-jpp-latest:
+    image: docker.km3net.de/jpp:latest
+    stage: build
+    script:
+        - *virtualenv_definition
+        - pip install -U pytest
+        - pytest
+
 pypi:
     image: docker.km3net.de/base/python:3
     stage: release