diff --git a/modules/cli/git.nix b/modules/cli/git.nix
index 77921a5..342a7c4 100644
--- a/modules/cli/git.nix
+++ b/modules/cli/git.nix
@@ -9,7 +9,7 @@
       extraConfig.init.defaultBranch = "main";
       delta.enable = true;
       signing = {
-        key = null;
+        key = "0xE4F362A3F5C338A0";
         signByDefault = true;
       };
     };