diff --git a/.github/workflows/push-backend-to-ghcr.yaml b/.github/workflows/push-backend-to-ghcr.yaml
index 4645c6d4..02e993e7 100644
--- a/.github/workflows/push-backend-to-ghcr.yaml
+++ b/.github/workflows/push-backend-to-ghcr.yaml
@@ -42,7 +42,7 @@ jobs:
             substituters = https://cache.nixos.org?priority=10 https://hackworthltd.cachix.org?priority=30 https://cache.iog.io?priority=40 https://cache.zw3rk.com?priority=50
 
       - name: Configure Cachix for private Hackworth Ltd cache
-        uses: cachix/cachix-action@v14
+        uses: cachix/cachix-action@v15
         with:
           name: hackworthltd-private
           authToken: '${{ env.CACHIX_AUTH_TOKEN }}'