diff --git a/devshell/default.nix b/devshell/default.nix
index 8a5dced..0854241 100644
--- a/devshell/default.nix
+++ b/devshell/default.nix
@@ -13,7 +13,8 @@ in
     NIX_USER_CONF_FILES = toString (pkgs.writeText "nix.conf"
       ''
         experimental-features = nix-command flakes ca-derivations
-        substituters = https://nix-cache.nul.ie https://cache.nixos.org
+        #substituters = https://nix-cache.nul.ie https://cache.nixos.org
+        substituters = https://cache.nixos.org
         trusted-public-keys = ${concatStringsSep " " lib.my.nix.cacheKeys}
       '');
 
diff --git a/home-manager/modules/common.nix b/home-manager/modules/common.nix
index c9971bb..633f0ac 100644
--- a/home-manager/modules/common.nix
+++ b/home-manager/modules/common.nix
@@ -230,7 +230,7 @@ in
         };
         settings = {
           substituters = [
-            "https://nix-cache.nul.ie"
+            #"https://nix-cache.nul.ie"
             "https://cache.nixos.org"
           ];
           trusted-public-keys = lib.my.nix.cacheKeys;
diff --git a/nixos/modules/common.nix b/nixos/modules/common.nix
index ea12822..3b596d9 100644
--- a/nixos/modules/common.nix
+++ b/nixos/modules/common.nix
@@ -49,7 +49,7 @@ in
           trusted-users = [ "@wheel" ];
           experimental-features = [ "nix-command" "flakes" "ca-derivations" ];
           substituters = [
-            "https://nix-cache.nul.ie"
+            #"https://nix-cache.nul.ie"
             "https://cache.nixos.org"
           ];
           trusted-public-keys = lib.my.nix.cacheKeys;