Add the nix-community cachix key
diff --git a/modules/cachix.nix b/modules/cachix.nix
index 7615ba1..efe5e24 100644
--- a/modules/cachix.nix
+++ b/modules/cachix.nix
@@ -10,6 +10,7 @@
       "hydra.nixos.org-1:CNHJZBh9K4tP3EKF6FkkgeVYsS3ohTl+oS0Qa8bezVs="
       "collabora.cachix.org-1:e5DYzGux57BzidOmwCJ7NJgydrumaTWtVXdswnerMoU="
       "nixfiles.cachix.org-1:QGVJNd+0aetjzU5l/MXrVg2adcrm9+8eL0HhIft3F+c="
+      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
     ];
   };
   home.home.packages = [ pkgs.cachix ];