diff --git a/.github/workflows/multi-platform-build.yml b/.github/workflows/multi-platform-build.yml
index 0fcdd904..17ed346b 100644
--- a/.github/workflows/multi-platform-build.yml
+++ b/.github/workflows/multi-platform-build.yml
@@ -74,8 +74,6 @@ jobs:
             env_file: unilabos-win64.yaml
 
     runs-on: ${{ matrix.os }}
-    env:
-      CONDA_NO_PLUGINS: "true"
 
     defaults:
       run:
@@ -122,6 +120,7 @@ jobs:
           else
             mamba install -n build-env --override-channels -c conda-forge rattler-build anaconda-client -y
           fi
+          echo "CONDA_NO_PLUGINS=true" >> "$GITHUB_ENV"
 
       - name: Show environment info
         if: steps.should_build.outputs.should_build == 'true'
diff --git a/.github/workflows/unilabos-conda-build.yml b/.github/workflows/unilabos-conda-build.yml
index 389c888d..40ec9c63 100644
--- a/.github/workflows/unilabos-conda-build.yml
+++ b/.github/workflows/unilabos-conda-build.yml
@@ -67,8 +67,6 @@ jobs:
             platform: win-64
 
     runs-on: ${{ matrix.os }}
-    env:
-      CONDA_NO_PLUGINS: "true"
 
     defaults:
       run:
@@ -115,6 +113,7 @@ jobs:
           else
             mamba install -n build-env --override-channels -c conda-forge rattler-build anaconda-client -y
           fi
+          echo "CONDA_NO_PLUGINS=true" >> "$GITHUB_ENV"
 
       - name: Show environment info
         if: steps.should_build.outputs.should_build == 'true'