diff --git a/home/git.nix b/home/git.nix
index b680105..28d95bc 100644
--- a/home/git.nix
+++ b/home/git.nix
@@ -7,6 +7,11 @@
     extraConfig = {
       push.autoSetupRemote = true;
       init.defaultBranch = "main";
+
+      # Sign all commits using ssh key
+      commit.gpgsign = true;
+      gpg.format = "ssh";
+      user.signingkey = "/home/rhea/.ssh/etwas_sign_key";
     };
   };
 }