diff --git a/modules/shell/git.nix b/modules/shell/git.nix
index 98dd75d..9e6acd1 100644
--- a/modules/shell/git.nix
+++ b/modules/shell/git.nix
@@ -8,6 +8,11 @@
       enable = true;
       userName = "Kabbone";
       userEmail = "tobias@opel-online.de";
+      lfs.enable = true;
+      signing = {
+        key = ~/.ssh/id_ed25519_sk_yubi_C;
+        signByDefault = true;
+      }
     };
   };
 }