diff --git a/.gitea/workflows/build.yaml b/.gitea/workflows/build.yaml
index 5016054..e6d2b27 100644
--- a/.gitea/workflows/build.yaml
+++ b/.gitea/workflows/build.yaml
@@ -36,3 +36,14 @@ jobs:
         run: |
           sed -i 's|stagex/bootstrap-stage2|docker.io/stagex/bootstrap-stage2|' packages/bootstrap/stage3/Containerfile
           make registry-bootstrap-stage3 PLATFORM=linux/amd64 REGISTRY_USERNAME=$CONTAINER_REGISTRY/okami101/stagex
+
+      - name: Restore filesystem cache
+        uses: actions/cache@v4
+        with:
+          path: fetch/core/filesystem
+          key: filesystem-${{ hashFiles('packages/core/filesystem/package.toml') }}
+      - name: Build filesystem
+        env:
+          CONTAINER_REGISTRY: ${{ vars.CONTAINER_REGISTRY }}
+        run: |
+          make registry-core-filesystem PLATFORM=linux/amd64 REGISTRY_USERNAME=$CONTAINER_REGISTRY/okami101/stagex