diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 410ca19f3eabb4f13d869702b1d83b050b1fe054..1fe5aaff8098119b89a292a7de5e5ecafc14c2d5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -100,6 +100,7 @@ minimal-windows:
     - source activate pystencils_dev
     - env
     - conda env list
+    - conda install `grep -Eo 'sympy[>=]+[0-9\.]+' setup.py | sed 's/>/=/g'`
     - pip install git+https://gitlab-ci-token:${CI_JOB_TOKEN}@i10git.cs.fau.de/pycodegen/pystencils.git@master#egg=pystencils
     - python -c "import numpy"
     - python setup.py quicktest