diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
index b168427..9bcaf5d 100644
--- a/.github/workflows/CI.yaml
+++ b/.github/workflows/CI.yaml
@@ -36,7 +36,7 @@ jobs:
           df -h
           ulimit -a
 
-      - uses: mamba-org/setup-micromamba@v1
+      - uses: mamba-org/setup-micromamba@v2
         with:
           environment-file: devtools/conda-envs/test_env.yaml
           environment-name: test