diff --git a/.github/workflows/ci-additional.yaml b/.github/workflows/ci-additional.yaml
index 1e19f594853..00f8ea42b97 100644
--- a/.github/workflows/ci-additional.yaml
+++ b/.github/workflows/ci-additional.yaml
@@ -180,9 +180,10 @@ jobs:
           channel-priority: strict
           mamba-version: "*"
           auto-update-conda: false
+          python-version: "3.8"
 
       - name: minimum versions policy
         run: |
-          mamba install -y pyyaml
+          mamba install -y pyyaml conda
           python ci/min_deps_check.py ci/requirements/py37-bare-minimum.yml
           python ci/min_deps_check.py ci/requirements/py37-min-all-deps.yml