diff --git a/.github/workflows/build-job.yml b/.github/workflows/build-job.yml
index 819620f56..e6878c414 100644
--- a/.github/workflows/build-job.yml
+++ b/.github/workflows/build-job.yml
@@ -47,14 +47,17 @@ jobs:
           sudo ln -s /opt/MacOSX11.3.sdk/System/Library/Frameworks/OpenGL.framework/Headers /usr/local/include/OpenGL
 
       # --- Setup Environment ---
-      - uses: mamba-org/setup-micromamba@v2
-        with:
-          # REMOVE: environment-file: environment.devenv.yml
-          environment-name: placeholder
-          # cache-environment: true
-          # Create a minimal environment with mamba-devenv
-          create-args: >-
-            -c conda-forge python=3.12 conda-devenv mamba
+      - name: install micromamba
+        run: "bash <(curl -L micro.mamba.pm/install.sh) && cp ~/.local/bin/micromamba ."
+
+      - name: add to path
+        run: echo 'PATH="${PATH}:${HOME}"' >> $GITHUB_PATH
+
+      - name: install conda-devenv
+        run: micromamba install mamba conda-devenv
+
+      - name: init shell
+        run: micromamba shell init
 
       - name: Prepare conda environment (mamba-devenv)
         shell: bash -l {0}
@@ -189,14 +192,19 @@ jobs:
           sudo tar -xf MacOSX10.15.sdk.tar.xz -C /opt
 
       # --- Setup Environment ---
-      - uses: mamba-org/setup-micromamba@v2
+      - uses: mamba-org/setup-micromamba@v3
+        env:
+          ACTIONS_STEP_DEBUG: true
         with:
           # micromamba-version: '1.5.8-0'
           # REMOVE: environment-file: environment.devenv.yml
           environment-name: placeholder
           # Create a minimal environment with mamba-devenv
+          init-shell: bash
           create-args: >-
-            -c conda-forge python=${{ env.PYTHON_VERSION }} conda-devenv mamba
+            python=${{ env.PYTHON_VERSION }}
+            conda-devenv
+            mamba
 
       - name: Prepare conda environment
         shell: bash -l {0}