diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 1635ffa..6375180 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -41,6 +41,7 @@ jobs:
           auto-activate-base: true
 
       - name: Install conda-lock and conda-pack
+        shell: bash -l {0}
         run: |
           conda install -n base -c conda-forge conda-lock conda-pack