diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 9fc7758..a3a6a4d 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -49,7 +49,7 @@ jobs:
 
     - name: Build
       run: |
-        conda install --yes numpy cython mpi4py nose setuptools
+        conda install --yes numpy cython mpi4py nose setuptools openmpi gcc
         python setup.py install
     - name: Unit tests
       run: |