diff --git a/.gitlab-ci/nix.conf b/.gitlab-ci/nix.conf
index 545c35920..f1fc3be60 100644
--- a/.gitlab-ci/nix.conf
+++ b/.gitlab-ci/nix.conf
@@ -1,6 +1,2 @@
 sandbox = true
 experimental-features = nix-command flakes
-substituters = https://cache.iog.io https://cache.nixos.org/ s3://nix-cache?scheme=http&endpoint=minio-gitlab-runner-cache
-trusted-public-keys = hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= minio-gitlab-runner-cache:ZN5neq93MHqpnieHSBlxGgWvCL0WKrZ2S9QS+U5Bnro=
-require-sigs = true
-post-build-hook = /etc/nix/upload-to-cache.sh
\ No newline at end of file