diff --git a/.github/workflows/book.yml b/.github/workflows/book.yml
index 73561d2..bffcedd 100644
--- a/.github/workflows/book.yml
+++ b/.github/workflows/book.yml
@@ -10,21 +10,35 @@ on:
 jobs:
   deploy-book:
     runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash -el {0}
+
     steps:
     - uses: actions/checkout@v2
 
     # Install dependencies
-    - name: Set up Python 3.9
-      uses: actions/setup-python@v1
-      with:
-        python-version: 3.9
-    - name: Install dependencies
-      run: |
-        pip install jupyter-book matplotlib numpy
+    # - name: Set up Python 3.9
+    #   uses: actions/setup-python@v1
+    #   with:
+    #     python-version: 3.9
+    # - name: Install dependencies
+    #   run: |
+    #     pip install jupyter-book matplotlib numpy
+    - name: Create environment with micromamba 🐍🖤
+      uses: mamba-org/setup-micromamba@v1
+      with: 
+        micromamba-version: '1.3.1-0'
+        environment-file: ./environment.yml
+        environment-name: paleosampling
+        init-shell: bash
+        cache-environment: true
     # Build the book
-    - name: Build the book
+    - name: Build the book 📘
       run: |
         jupyter-book build .
+      env:
+        PYTHON : /home/runner/micromamba/envs/paleosampling/bin/python
     # Push the book's HTML to github-pages
     - name: GitHub Pages action
       uses: peaceiris/actions-gh-pages@v3