diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index bcc8c4331d2e8ee7b1816e4557feb5dad480a1bd..5b272ba04b5092cf1405d180ba7578b2319eae2f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -5,7 +5,7 @@ tests:
         - docker
     script:
         - cd python
-        - pip3 install --no-deps ltfatpy madarrays yafe skpomade pandas
+        - pip3 install --no-deps ltfatpy madarrays yafe skpomade pandas xarray
         - pip3 install 'scipy==1.4.1' -U
         - pip3 install 'matplotlib==3.1.2' -U
         - pip3 install --no-deps .
@@ -21,7 +21,7 @@ pages:
         - master
     script:
         - cd python
-        - pip3 install --no-deps ltfatpy madarrays yafe skpomade pandas
+        - pip3 install --no-deps ltfatpy madarrays yafe skpomade pandas xarray
         - pip3 install 'scipy==1.4.1' -U
         - pip3 install 'matplotlib==3.1.2' -U
         - pip3 install --no-deps .