diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index 5195482d5..43ba95dc8 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -22,7 +22,7 @@ jobs:
           fetch-depth: 0
 
       - name: Set up conda environment
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           environment-name: flox-bench
           create-args: >-
diff --git a/.github/workflows/ci-additional.yaml b/.github/workflows/ci-additional.yaml
index 21baff867..bf4a0b7dc 100644
--- a/.github/workflows/ci-additional.yaml
+++ b/.github/workflows/ci-additional.yaml
@@ -53,7 +53,7 @@ jobs:
           echo "TODAY=$(date  +'%Y-%m-%d')" >> $GITHUB_ENV
 
       - name: Setup micromamba
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           environment-file: ${{env.CONDA_ENV_FILE}}
           environment-name: flox-tests
@@ -106,7 +106,7 @@ jobs:
         run: |
           echo "TODAY=$(date +'%Y-%m-%d')" >> $GITHUB_ENV
       - name: Setup micromamba
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           environment-file: ${{env.CONDA_ENV_FILE}}
           environment-name: flox-tests
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index da3802d70..d81f0158f 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -48,7 +48,7 @@ jobs:
         run: |
           echo "PYTHON_VERSION=${{ matrix.python-version }}" >> $GITHUB_ENV
       - name: Set up conda environment
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           environment-file: ci/${{ matrix.env }}.yml
           environment-name: flox-tests
@@ -105,7 +105,7 @@ jobs:
           repository: "pydata/xarray"
           fetch-depth: 0 # Fetch all history for all branches and tags.
       - name: Set up conda environment
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           environment-file: ci/requirements/environment.yml
           environment-name: xarray-tests
diff --git a/.github/workflows/upstream-dev-ci.yaml b/.github/workflows/upstream-dev-ci.yaml
index fdaafdb64..e53891c66 100644
--- a/.github/workflows/upstream-dev-ci.yaml
+++ b/.github/workflows/upstream-dev-ci.yaml
@@ -43,7 +43,7 @@ jobs:
         run: |
           echo "PYTHON_VERSION=${{ matrix.python-version }}" >> $GITHUB_ENV
       - name: Set up conda environment
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           environment-name: flox-tests
           init-shell: bash