diff --git a/src/core/fetch-transport.ts b/src/core/fetch-transport.ts
index 9329e00..c649d25 100644
--- a/src/core/fetch-transport.ts
+++ b/src/core/fetch-transport.ts
@@ -21,8 +21,7 @@ export function createFetchTransport(
       {
         method: "POST",
         headers: {
-          "Content-Type": "application/json;charset=utf-8",
-          Accept: "application/json",
+          "Content-Type": "text/plain",
           Authorization: `Bearer ${apiKey}`,
         },
         body: JSON.stringify(event),