diff --git a/modules/services/gpg-agent.nix b/modules/services/gpg-agent.nix
index 41a1ff39d..1092dd874 100644
--- a/modules/services/gpg-agent.nix
+++ b/modules/services/gpg-agent.nix
@@ -240,6 +240,7 @@ in
           ExecStart = "${pkgs.gnupg}/bin/gpg-agent --supervised"
             + optionalString cfg.verbose " --verbose";
           ExecReload = "${pkgs.gnupg}/bin/gpgconf --reload gpg-agent";
+          Environment = "GNUPGHOME=${homedir}";
         };
       };