diff --git a/.github/workflows/io-test.yml b/.github/workflows/io-test.yml
index e5e0cd3a5..189418e51 100644
--- a/.github/workflows/io-test.yml
+++ b/.github/workflows/io-test.yml
@@ -48,7 +48,7 @@ jobs:
 
       - uses: conda-incubator/setup-miniconda@v3
         with:
-          activate-environment: neo-test-env
+          activate-environment: neo-test-env-${{ matrix.python-version }}
           python-version: "${{ matrix.python-version }}"
 
       - name: Get current dependencies hash
@@ -62,7 +62,7 @@ jobs:
         #   * when package dependencies change
         id: cache-conda-env
         with:
-          path: /usr/share/miniconda/envs/neo-test-env
+          path: /usr/share/miniconda/envs/neo-test-env-${{ matrix.python-version }}
           key: ${{ runner.os }}-conda-env-${{ steps.dependencies.outputs.hash }}-${{ steps.date.outputs.date }}
           # restore-keys match any key that starts with the restore-key
           restore-keys: |
@@ -74,8 +74,7 @@ jobs:
         # restore-key hits should result in `cache-hit` == 'false'
         if: steps.cache-conda-env.outputs.cache-hit != 'true'
         run: |
-          conda env update --name neo-test-env --file environment_testing.yml --prune
-          conda install python=${{ matrix.python-version }}
+          conda env update --name neo-test-env-${{ matrix.python-version }} --file environment_testing.yml --prune
 
       - name: Configure git
         run: |