diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0ac0c6b..69d227d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,27 +20,20 @@ jobs:
         uses: actions/checkout@v3
         with:
           submodules: recursive
-
-      - name: Set up Python
-        uses: actions/setup-python@v5
+      - uses: conda-incubator/setup-miniconda@v3
         with:
-          python-version: ${{ matrix.python-version }}
+          miniconda-version: 'latest'
+          channels: conda-forge
+          mamba-version: "*"
+          channel-priority: true
+          auto-update-conda: false
+          auto-activate-base: false
+          environment-file: src/python/environment.yml
+          activate-environment: earth-analytics-python
 
       - name: Display Python version
         run: python -c "import sys; print(sys.version)"
 
-      # https://github.com/nmslib/nmslib/issues/538
-      - name: Install an available library from the abandoned nmslib project
-        run: >-
-          [ $(python --version | sed -E 's/Python ([0-9]+\.[0-9]+)\.[0-9]+.*/\1/') == '3.11' ] && \
-            pip install https://raw.githubusercontent.com/plandes/mednlp/master/test-resources/github-workflow-lib/nmslib-2.1.2-cp311-cp311-linux_x86_64.whl || true
-
-      # avoid out of space errors
-      # https://github.com/orgs/community/discussions/25678
-      - name: Cleanup space
-        run: >-
-          rm -fr /opt/hostedtoolcache && rm -fr ~/.cache/pip
-
       - name: Prepare tests
         run: 'make info testdeps'