diff --git a/.github/workflows/test-ci.yml b/.github/workflows/test-ci.yml
index a51d817..a6cbf6d 100644
--- a/.github/workflows/test-ci.yml
+++ b/.github/workflows/test-ci.yml
@@ -147,6 +147,13 @@ jobs:
         uses: actions/setup-python@v4
         with:
           python-version: "3.10"
+
+      - name: Restore cached mrtwin directory
+        uses: actions/cache/restore@v4
+        id: cache-restore
+        with:
+          path: ~/.cache/mrtwin
+          key: ${{ runner.os }}-mrtwin
         
       - name: Install dependencies
         shell: bash -l {0}
@@ -162,6 +169,13 @@ jobs:
       - name: Display data
         run: ls -R
         working-directory: docs_build/_static
+
+      - name: Cache mrtwin directory
+        uses: actions/cache/save@v4
+        if: ${{ steps.cache-restore.outputs.cache-hit != 'true' }}
+        with:
+          path: ~/.cache/mrtwin
+          key: ${{ runner.os }}-mrtwin
       
       - name: Upload artifact
         id: artifact-upload-step