diff --git a/modules/docker-ci-runner/default.nix b/modules/docker-ci-runner/default.nix
index 11998fd9..4863d970 100644
--- a/modules/docker-ci-runner/default.nix
+++ b/modules/docker-ci-runner/default.nix
@@ -23,7 +23,7 @@ let
 
     export nix_user_config_file="/home/build/.local/share/nix/trusted-settings.json"
     mkdir -p $(dirname \\$nix_user_config_file)
-    echo '{"extra-experimental-features":{"nix-command flakes":true},"extra-substituters":{"https://nix-dram.cachix.org https://dram.cachix.org  https://nrdxp.cachix.org https://nix-community.cachix.org":true},"extra-trusted-public-keys":{"nix-dram.cachix.org-1:CKjZ0L1ZiqH3kzYAZRt8tg8vewAx5yj8Du/+iR8Efpg= dram.cachix.org-1:baoy1SXpwYdKbqdTbfKGTKauDDeDlHhUpC+QuuILEMY= nrdxp.cachix.org-1:Fc5PSqY2Jm1TrWfm88l6cvGWwz3s93c6IOifQWnhNW4= nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs=":true}}' > \\$nix_user_config_file
+    echo '{"extra-experimental-features":{"nix-command flakes":true}}' > \\$nix_user_config_file
     chown -R build /home/build/
 
     curl -L https://github.com/drone-runners/drone-runner-exec/releases/latest/download/drone_runner_exec_linux_amd64.tar.gz | tar xz