diff --git a/flake.nix b/flake.nix
index 494ce4f..3f362e2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -114,13 +114,11 @@
     extra-substituters = [
       "https://nix-community.cachix.org"
       "https://cache.garnix.io"
-      "https://cything.cachix.org"
       "https://cache.cy7.sh/main"
     ];
     extra-trusted-public-keys = [
       "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
       "cache.garnix.io:CTFPyKSLcx5RMJKfLo5EEPUObbA78b0YQ2DTCJXqr9g="
-      "cything.cachix.org-1:xqW1W5NNL+wrM9wfSELb0MLj/harD2ZyB4HbdaMyvPI="
       "main:Ku31HoEWcBtfggge2VGj+QTkVrQuIwRIMGyfV/5VQP0="
     ];
     builders-use-substitutes = true;
diff --git a/hosts/common.nix b/hosts/common.nix
index 0fb2fc6..bfa70e3 100644
--- a/hosts/common.nix
+++ b/hosts/common.nix
@@ -10,17 +10,13 @@
         "@wheel"
       ];
       trusted-public-keys = [
-        "niri.cachix.org-1:Wv0OmO7PsuocRKzfDoJ3mulSl7Z6oezYhGhR+3W2964="
         "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
         "cache.garnix.io:CTFPyKSLcx5RMJKfLo5EEPUObbA78b0YQ2DTCJXqr9g="
-        "cything.cachix.org-1:xqW1W5NNL+wrM9wfSELb0MLj/harD2ZyB4HbdaMyvPI="
         "main:Ku31HoEWcBtfggge2VGj+QTkVrQuIwRIMGyfV/5VQP0="
       ];
       substituters = [
-        "https://niri.cachix.org"
         "https://nix-community.cachix.org"
         "https://cache.garnix.io"
-        "https://cything.cachix.org"
         "https://cache.cy7.sh/main"
       ];
     };