diff --git a/hosts/common/nix.nix b/hosts/common/nix.nix
index e760e61..d517c39 100644
--- a/hosts/common/nix.nix
+++ b/hosts/common/nix.nix
@@ -42,6 +42,7 @@
         "https://viperml.cachix.org"
         "https://nix-community.cachix.org"
         "https://prismlauncher.cachix.org"
+        "https://cosmic.cachix.org/"
       ];
       trusted-public-keys = [
         "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
@@ -52,6 +53,7 @@
         "viperml.cachix.org-1:qZhKBMTfmcLL+OG6fj/hzsMEedgKvZVFRRAhq7j8Vh8="
         "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
         "prismlauncher.cachix.org-1:9/n/FGyABA2jLUVfY+DEp4hKds/rwO+SCOtbOkDzd+c="
+        "cosmic.cachix.org-1:Dya9IyXD4xdBehWjrkPv6rtxpmMdRel02smYzA85dPE="
       ];
     };
     extraOptions = ''