diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index 2651217..cdad5a5 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -52,21 +52,10 @@ jobs:
           environment-file: environment.yml
           cache-downloads: true
           cache-environment: true
-          init-shell: >-
-            bash
-            powershell
-          post-cleanup: 'all'
+          init-shell: bash powershell
       - name: Install & Test polyhedral-gravity (Unix)
         run: |
           pip install . -vv --no-build-isolation
           pytest -n 3
-        shell: bash -el {0}
-        if: matrix.os != 'windows-latest'
-      - name: Install & Test polyhedral-gravity (Windows)
-        run: |
-          pip install . -vv --no-build-isolation
-          pytest -n 3
-        shell: pwsh
-        if: matrix.os == 'windows-latest'
 
           
diff --git a/environment.yml b/environment.yml
index e8087c0..51d92d9 100644
--- a/environment.yml
+++ b/environment.yml
@@ -2,6 +2,7 @@ name: polyhedral-gravity-env
 channels:
   - conda-forge
 dependencies:
+  - python==3.12
   - numpy
   - pytest
   - pytest-xdist
\ No newline at end of file