diff --git a/flake.nix b/flake.nix
index 273b35d..160bfd9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,6 +1,15 @@
 {
   description = "Read Later Telegram bot";
 
+  nixConfig = {
+    extra-substituters = [
+      "https://cache.garnix.io"
+    ];
+    extra-trusted-public-keys = [
+      "cache.garnix.io:CTFPyKSLcx5RMJKfLo5EEPUObbA78b0YQ2DTCJXqr9g="
+    ];
+  };
+
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     flake-utils.url = "github:numtide/flake-utils";