diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 16372519..8315c0b5 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -19,10 +19,6 @@ jobs:
       id-token: write
     steps:
     - uses: actions/checkout@v2
-    - name: Merge
-      run: |
-        cp .ci_support/environment-openmpi.yml environment.yml
-        echo "- python-build" >> environment.yml
     - uses: conda-incubator/setup-miniconda@v2.2.0
       with:
         python-version: 3.11
@@ -31,7 +27,7 @@ jobs:
         miniforge-variant: Mambaforge
         channel-priority: strict
         auto-update-conda: true
-        environment-file: environment.yml
+        environment-file: .ci_support/environment-openmpi.yml
     - name: Convert dependencies
       run: |
         cp .ci_support/environment-old.yml environment.yml