diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index e1981d4..a23c2b6 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -16,8 +16,8 @@ jobs:
       with:
         github_access_token: ${{ secrets.GITHUB_TOKEN }}
         extra_nix_config: |
-          trusted-public-keys = hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
-          substituters = https://hydra.iohk.io https://cache.iog.io https://cache.nixos.org/
+          trusted-public-keys = sgillespie.cachix.org-1:Zgif/WHW2IzHqbMb1z56cMmV5tLAA+zW9d5iB5w/VU4= hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ=
+          substituters = https://sgillespie.cachix.org https://cache.iog.io
           experimental-features = nix-command flakes
           allow-import-from-derivation = true
           accept-flake-config = true