diff --git a/.github/workflows/deployment.yaml b/.github/workflows/deployment.yaml
index 1e91d5e..4de0ed0 100644
--- a/.github/workflows/deployment.yaml
+++ b/.github/workflows/deployment.yaml
@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Set up Conda environment with Micromamba
-        uses: mamba-org/setup-micromamba@f8b8a1e23a26f60a44c853292711bacfd3eac822
+        uses: mamba-org/setup-micromamba@617811f69075e3fd3ae68ca64220ad065877f246
         with:
            environment-file: envs/environment-test.yaml
            environment-name: salishsea-site-test