diff --git a/.github/workflows/config_options.yml b/.github/workflows/config_options.yml
index 01c16fb5a..9d87afffd 100644
--- a/.github/workflows/config_options.yml
+++ b/.github/workflows/config_options.yml
@@ -40,7 +40,7 @@ jobs:
       - name: Output g++ version . . .
         run: g++ --version
       - name: Install micromamba environment from environment.yml . . .
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           environment-name: digraphs
           cache-environment: true