diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3f878df..13c4e0d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -22,14 +22,14 @@ jobs:
         shell: bash -l {0}
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
-      - name: Install Python
-        uses: conda-incubator/setup-miniconda@v2
+      - name: Install micromamba
+        uses: mamba-org/provision-with-micromamba@main
         with:
-          mamba-version: "*"
-          channels: conda-forge
-          python-version: ${{ matrix.python-version }}
+          environment-file: environment-dev.yml
+          environment-name: ypy
+          extra-specs: python=${{ matrix.python-version }}
 
       - name: Install Rust
         uses: actions-rs/toolchain@v1
diff --git a/environment-dev.yml b/environment-dev.yml
new file mode 100644
index 0000000..6418c3a
--- /dev/null
+++ b/environment-dev.yml
@@ -0,0 +1,5 @@
+name: ypy
+channels:
+  - conda-forge
+dependencies:
+  - pip