diff --git a/src/auth.ts b/src/auth.ts
index e05d0d7..d562106 100644
--- a/src/auth.ts
+++ b/src/auth.ts
@@ -84,8 +84,8 @@ export function generate(
         server: [
           {
             id: id,
-            username: username,
-            password: password
+            username: `${username}`,
+            password: `${password}`
           }
         ]
       }
@@ -95,7 +95,7 @@ export function generate(
   if (gpgPassphrase) {
     const gpgServer = {
       id: 'gpg.passphrase',
-      passphrase: gpgPassphrase
+      passphrase: `${gpgPassphrase}`
     };
     xmlObj.settings.servers.server.push(gpgServer);
   }