diff --git a/flake.nix b/flake.nix
index 30ff74ea..3fe40932 100644
--- a/flake.nix
+++ b/flake.nix
@@ -186,9 +186,11 @@
           # Set several binary caches.
           substituters = [
             "https://nix-community.cachix.org"
+            "https://foo-dogsquared.cachix.org"
           ];
           trusted-public-keys = [
             "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+            "foo-dogsquared.cachix.org-1:/2fmqn/gLGvCs5EDeQmqwtus02TUmGy0ZlAEXqRE70E="
           ];
 
           # Sane config for the package manager.