diff --git a/.github/workflows/sphinx-to-gh-pages.yaml b/.github/workflows/sphinx-to-gh-pages.yaml
index a1b6e6d..56e5dd9 100644
--- a/.github/workflows/sphinx-to-gh-pages.yaml
+++ b/.github/workflows/sphinx-to-gh-pages.yaml
@@ -26,7 +26,7 @@ jobs:
           fetch-depth: 0
 
       - name: Set up Conda environment with Micromamba
-        uses: mamba-org/setup-micromamba@add3a49764cedee8ee24e82dfde87f5bc2914462
+        uses: mamba-org/setup-micromamba@d7c9bd84e824b79d2af72a2d4196c7f4300d3476
         with:
            environment-file: envs/environment-gh-pages.yaml
            environment-name: numeric-gh-pages