diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 63a840d..b5865b4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
         with:
           tool-cache: true
       - uses: DeterminateSystems/magic-nix-cache-action@v2
-      - uses: cachix/cachix-action@v14
+      - uses: cachix/cachix-action@v15
         with:
           name: callumio-public
           authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'