diff --git a/nixos/boxes/form3/default.nix b/nixos/boxes/form3/default.nix
index e66a9109..7291953c 100644
--- a/nixos/boxes/form3/default.nix
+++ b/nixos/boxes/form3/default.nix
@@ -48,5 +48,14 @@
     imports = [ ];
     home.packages = [ ];
     programs.git.userEmail = lib.mkForce "cyryl.plotnicki@form3.tech";
+    programs.git.extraConfig.user.signingkey =
+      "6441B1BC81F8FB1561C9AFF5534222210FE423ED";
+    programs.git.extraConfig.commit.gpgsign = true;
+    programs.gpg.enable = true;
+    programs.gpg.homedir = "/Users/cyryl/.gnupg";
+    programs.zsh.shellAliases = {
+      gpg = "gpg2 --homedir /Users/cyryl/.gnupg";
+      gpg2 = "gpg2 --homedir /Users/cyryl/.gnupg";
+    };
   };
 }