diff --git a/.github/workflows/cache.yml b/.github/workflows/cache.yml
index 348db6f43..79e3d3c59 100644
--- a/.github/workflows/cache.yml
+++ b/.github/workflows/cache.yml
@@ -72,7 +72,7 @@ jobs:
           path: ${{ env.CRDS_PATH }}/**/jwst*
           key: test-cache-${{ needs.contexts.outputs.jwst }}
       - if: steps.lookup-combined-cache.outputs.cache-hit != 'true'
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           environment-name: crds-testing
           create-args: >-
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7cf6c0315..4812c86e6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -50,7 +50,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - uses: mamba-org/setup-micromamba@v1
+      - uses: mamba-org/setup-micromamba@v2
         with:
           environment-name: crds-testing
           create-args: >-