diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
index d914f876..170196f8 100644
--- a/.github/workflows/CI.yaml
+++ b/.github/workflows/CI.yaml
@@ -37,7 +37,7 @@ jobs:
 
       - name: Install with OpenEye Toolkits
         if: ${{ matrix.openeye == true }}
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           micromamba-binary-path: ~/.local/bin/micromamba
           environment-file: devtools/conda-envs/test-env.yaml
@@ -47,7 +47,7 @@ jobs:
 
       - name: Install with AmberTools
         if: ${{ matrix.openeye == false }}
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           micromamba-binary-path: ~/.local/bin/micromamba
           environment-file: devtools/conda-envs/no_openeye.yaml
diff --git a/.github/workflows/installer.yml b/.github/workflows/installer.yml
index cafba30b..8ec71afd 100644
--- a/.github/workflows/installer.yml
+++ b/.github/workflows/installer.yml
@@ -28,7 +28,7 @@ jobs:
     - uses: actions/checkout@v4
 
     - name: Install conda environment
-      uses: mamba-org/setup-micromamba@v1
+      uses: mamba-org/setup-micromamba@v2
       with:
         environment-file: devtools/conda-envs/installer.yaml
         create-args: >-