diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b555c71..a54c734 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -36,6 +36,7 @@ jobs:
         with:
           extra-conf: |
             accept-flake-config = true
+
       - uses: DeterminateSystems/magic-nix-cache-action@v7
 
       - uses: cachix/cachix-action@v15
@@ -43,6 +44,16 @@ jobs:
           name: daylin
           authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
 
+      - name: Swap Lix for nix
+        run: |
+          which nix
+          sudo nix run \
+              --experimental-features "nix-command flakes" \
+              --extra-substituters https://cache.lix.systems --extra-trusted-public-keys "cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o=" \
+              'git+https://git@git.lix.systems/lix-project/lix?ref=refs/tags/2.90.0-rc1' -- \
+              upgrade-nix \
+              --extra-substituters https://cache.lix.systems --extra-trusted-public-keys "cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o="
+
       - name: write lock file
         if: "${{ inputs.lockFile != '' }}"
         run: |