diff --git a/.github/workflows/pr-checks.yaml b/.github/workflows/pr-checks.yaml
index caa1e9a..5953b94 100644
--- a/.github/workflows/pr-checks.yaml
+++ b/.github/workflows/pr-checks.yaml
@@ -37,11 +37,13 @@ jobs:
       - name: Build environment
         run: |
           conda env create -f environment.yml
+          eval "$(conda shell.bash hook)"
           conda activate cellxgene-gateway
           python setup.py install
 
       - name: Run tests
         run: |
+          eval "$(conda shell.bash hook)"
           conda activate cellxgene-gateway
           python -m unittest discover tests
           bash <(curl -s https://codecov.io/bash)