diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 07df37b8..f159f9be 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -73,9 +73,6 @@ jobs:
         with:
           activate-environment: "build"
           python-version: ${{ matrix.pyver }}
-          miniforge-variant: Mambaforge
-          miniforge-version: 24.11.0-0
-          use-mamba: true
           add-pip-as-python-dependency: true
           auto-activate-base: false