diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 6f1d2be..ba9cdb9 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -23,6 +23,7 @@ jobs:
       - uses: conda-incubator/setup-miniconda@v3
         with:
           auto-activate-base: false
+          python-version: 3.11
           activate-environment: biochemist-python
           environment-file: requirements.yaml