diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 23748090c4d111eb59c8f52d66cad6b09144922c..0a11e7296f93c9e56f9251a29a8df6cf61f8b950 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -26,6 +26,7 @@ minimal-windows:
     - conda env list
     - python -c "import numpy"
     - git submodule update --init --recursive
+    - pip install -e .
     - python setup.py bdist_wheel
   artifacts:
     paths: