diff --git a/.github/workflows/python-test.yml b/.github/workflows/python-test.yml
index beecc4f1..df6bcaf2 100644
--- a/.github/workflows/python-test.yml
+++ b/.github/workflows/python-test.yml
@@ -9,6 +9,9 @@ on:
   pull_request:
     branches: [ "main" ]
 
+env:
+  CACHE_NUMBER: 0  # increase to reset cache manually
+
 permissions:
   contents: read
 
@@ -26,6 +29,7 @@ jobs:
       uses: actions/setup-python@v3
       with:
         python-version: "3.10"
+
     - name: Create environment with mamba
       uses: conda-incubator/setup-miniconda@v2
       with:
@@ -33,7 +37,18 @@ jobs:
         channels: pytorch, nvidia, conda-forge
         auto-activate-base: false
         activate-environment: gfm-bench8
-        environment-file: environment.yaml
+
+    - name: Set cache date
+      run: echo "DATE=$(date +'%Y%m%d')" >> $GITHUB_ENV
+    - uses: actions/cache@v2
+      with:
+        path: /usr/share/miniconda3/envs/my-env
+        key: conda-${{ hashFiles('environment.yml') }}-${{ env.DATE }}-${{ env.CACHE_NUMBER }}
+      id: cache
+
+    - name: Update environment
+      run: mamba env update -n gfm-bench8 -f environment.yml
+      if: steps.cache.outputs.cache-hit != 'true'
       
     - name: Check solution
       run: |