diff --git a/.github/workflows/ci-additional.yaml b/.github/workflows/ci-additional.yaml
index 2845735..129cbd7 100644
--- a/.github/workflows/ci-additional.yaml
+++ b/.github/workflows/ci-additional.yaml
@@ -25,7 +25,7 @@ jobs:
           fetch-depth: 0 # Fetch all history for all branches and tags.
 
       - name: Create conda environment
-        uses: mamba-org/setup-micromamba@v2
+        uses: mamba-org/setup-micromamba@v3
         with:
           environment-name: min-version-policy
           micromamba-version: 'latest'
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 612c2d4..a212dea 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -49,7 +49,7 @@ jobs:
         fi
 
     - name: Create conda environment
-      uses: mamba-org/setup-micromamba@v2
+      uses: mamba-org/setup-micromamba@v3
       with:
         environment-name: mplotutils-tests
         cache-downloads: true
diff --git a/.github/workflows/upstream-dev-ci.yaml b/.github/workflows/upstream-dev-ci.yaml
index d38d533..85a9b80 100644
--- a/.github/workflows/upstream-dev-ci.yaml
+++ b/.github/workflows/upstream-dev-ci.yaml
@@ -41,7 +41,7 @@ jobs:
         with:
           fetch-depth: 0 # Fetch all history for all branches and tags.
       - name: Set up conda environment
-        uses: mamba-org/setup-micromamba@v2
+        uses: mamba-org/setup-micromamba@v3
         with:
           environment-file: ci/requirements/environment.yml
           environment-name: mplotutils-tests