diff --git a/donut-sync/nixpacks.toml b/donut-sync/nixpacks.toml
new file mode 100644
index 0000000..c8f3edf
--- /dev/null
+++ b/donut-sync/nixpacks.toml
@@ -0,0 +1,11 @@
+[phases.setup]
+nixPkgs = ["nodejs_22"]
+
+[phases.install]
+cmds = ["npm install --include=dev"]
+
+[phases.build]
+cmds = ["npm run build", "npm prune --omit=dev"]
+
+[start]
+cmd = "npm run start:prod"
diff --git a/donut-sync/src/main.ts b/donut-sync/src/main.ts
index 140b55a..3ac4c61 100644
--- a/donut-sync/src/main.ts
+++ b/donut-sync/src/main.ts
@@ -2,12 +2,8 @@ import { NestFactory } from "@nestjs/core";
 import { AppModule } from "./app.module.js";
 
 function validateEnv() {
-  const required = ["SYNC_TOKEN"];
-  const missing = required.filter((key) => !process.env[key]);
-  if (missing.length > 0) {
-    console.error(
-      `Missing required environment variables: ${missing.join(", ")}`,
-    );
+  if (!process.env.SYNC_TOKEN && !process.env.SYNC_JWT_PUBLIC_KEY) {
+    console.error("Either SYNC_TOKEN or SYNC_JWT_PUBLIC_KEY must be set");
     process.exit(1);
   }
 }
diff --git a/src-tauri/src/cloud_auth.rs b/src-tauri/src/cloud_auth.rs
index 6174909..58f1bb7 100644
--- a/src-tauri/src/cloud_auth.rs
+++ b/src-tauri/src/cloud_auth.rs
@@ -26,7 +26,7 @@ pub struct CloudUser {
   pub email: String,
   pub plan: String,
   #[serde(rename = "planPeriod")]
-  pub plan_period: String,
+  pub plan_period: Option<String>,
   #[serde(rename = "subscriptionStatus")]
   pub subscription_status: String,
   #[serde(rename = "profileLimit")]
diff --git a/src/types.ts b/src/types.ts
index 40a4e36..553d77d 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -40,7 +40,7 @@ export interface CloudUser {
   id: string;
   email: string;
   plan: string;
-  planPeriod: string;
+  planPeriod: string | null;
   subscriptionStatus: string;
   profileLimit: number;
   cloudProfilesUsed: number;