diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index f571c3f..831e5f1 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -33,12 +33,17 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+      - name: Get current date
+        id: date
+        run: echo "date=$(date +%Y-%m-%d)" >> "${GITHUB_OUTPUT}"
       - uses: mamba-org/setup-micromamba@v1
         with:
           environment-file: environment.yml
           environment-name: kartograf
           cache-environment: true
           cache-downloads: true
+          cache-environment-key: environment-${{ steps.date.outputs.date }}
+          cache-downloads-key: downloads-${{ steps.date.outputs.date }}
           create-args: >-
             python=${{ matrix.python-version }}