diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b8838beee6208f9855190664a2cd25160573a65c..6c7a596f0c450ba7136b355548bdfabec8eb8779 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -9,18 +9,23 @@ variables:
 cache:
   paths:
     - .cache/pip
+    - venv/
 
 before_script:
-  - python3 --version  # For debugging
+  - python3 --version
   - python3 -m pip install --upgrade pip
+  - pip3 install virtualenv
+  - virtualenv venv
+  - source venv/bin/activate
+  - python3 -m pip install --upgrade numpy
+  - python3 -m pip install --upgrade coverage
 
 test:
   script:
-    - python3 -m pip install --upgrade numpy # stupid - can't we read this out of the package requirements? Or install first, then test?
-    - python3 -m pip install --upgrade coverage
+    - python3 -m pip install -e .
     - make
 
-run:
+build_package:
   script:
     - python3 -m pip install --upgrade build
     - python3 -m build