diff --git a/flake.nix b/flake.nix
index fd09a11..2c320a6 100644
--- a/flake.nix
+++ b/flake.nix
@@ -5,13 +5,11 @@
     extra-substituters = [
       "https://crane.cachix.org"
       "https://nix-community.cachix.org"
-      "https://casper-cache.marijan.pro"
       "https://cspr.cachix.org"
     ];
     extra-trusted-public-keys = [
       "crane.cachix.org-1:8Scfpmn9w+hGdXH/Q9tTLiYAE/2dnJYRJP7kl80GuRk="
       "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
-      "casper-cache.marijan.pro:XIDjpzFQTEuWbnRu47IqSOy6IqyZlunVGvukNROL850="
       "cspr.cachix.org-1:vEZlmbOsmTXkmEi4DSdqNVyq25VPNpmSm6qCs4IuTgE="
     ];
   };