diff --git a/modules/shared/home-manager.nix b/modules/shared/home-manager.nix
index 6ad4583..061d14d 100644
--- a/modules/shared/home-manager.nix
+++ b/modules/shared/home-manager.nix
@@ -120,6 +120,11 @@ in
         email = email;
       };
     };
+    signing = {
+      format = "openpgp";
+      key = null;
+      signByDefault = true;
+    };
   };
 
   vim = {