diff --git a/src/lib/api.ts b/src/lib/api.ts
index de58594..e680143 100644
--- a/src/lib/api.ts
+++ b/src/lib/api.ts
@@ -25,8 +25,8 @@ function errorDetailToMessage(detail: unknown): string {
 
 async function req<T>(path: string, opts?: RequestInit): Promise<T> {
   const res = await fetch(`${BASE}${path}`, {
-    headers: { 'Content-Type': 'application/json', ...opts?.headers },
     ...opts,
+    headers: { 'Content-Type': 'application/json', ...opts?.headers },
   });
   let data: unknown;
   try {