diff --git a/flake.nix b/flake.nix
index 6f0a15d..bdf7520 100644
--- a/flake.nix
+++ b/flake.nix
@@ -95,7 +95,12 @@
               ./nixos/server/harden.nix
               ./nixos/hercules.nix
             ];
-          # This is run in qemu only.
+
+          # For downloading stuff off internet in VPN.
+          #
+          # This is run in qemu only, which is useful to keep the host machine
+          # directly connected to the network (for acccess from outside).
+          #
           # > nixos-shell --flake github:srid/nixos-config#corsair
           corsair = pkgs.lib.makeOverridable nixpkgs.lib.nixosSystem {
             inherit system pkgs;
diff --git a/nixos/caches/oss.nix b/nixos/caches/oss.nix
index 3cebe67..59baca3 100644
--- a/nixos/caches/oss.nix
+++ b/nixos/caches/oss.nix
@@ -1,12 +1,12 @@
 { pkgs, ... }: {
   nix.binaryCachePublicKeys = [
-    "srid.cachix.org-1:MTQ6ksbfz3LBMmjyPh0PLmos+1x+CdtJxA/J2W+PQxI="
-    "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+    # "srid.cachix.org-1:MTQ6ksbfz3LBMmjyPh0PLmos+1x+CdtJxA/J2W+PQxI="
+    # "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
     "cache.garnix.io:CTFPyKSLcx5RMJKfLo5EEPUObbA78b0YQ2DTCJXqr9g="
   ];
   nix.binaryCaches = [
-    "https://srid.cachix.org"
-    "https://nix-community.cachix.org"
+    # "https://srid.cachix.org"
+    # "https://nix-community.cachix.org"
     "https://cache.garnix.io"
   ];
 }