diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 41fd475..dd9f197 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,11 +31,12 @@ jobs:
       - uses: actions/checkout@v4
       - uses: DeterminateSystems/nix-installer-action@v9
 
-      - name: setup cachix
-        uses: cachix/cachix-action@v13
+      - name: setup attic
+        uses: ryanccn/attic-action@v0
         with:
-          name: uku3lig
-          authToken: ${{ secrets.CACHIX_AUTH_TOKEN }}
+          endpoint: https://attic.uku3lig.net
+          cache: uku
+          token: ${{ secrets.ATTIC_TOKEN }}
 
       - name: build
         run: nix build -L --accept-flake-config .#${{ matrix.pkg }}