set content type header on upstream requests

1 files changed, 1 insertions, 0 deletions

diff --git a/src/lib.rs b/src/lib.rs
index f50fbdc..b4c6d6a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -124,6 +124,7 @@ pub async fn filter_request(
     let upstream_req = Request::builder()
         .uri(upstream_uri)
         .method(&parts.method)
+        .header("Content-Type", "application/json; charset=UTF-8")
         .body(body)
         .expect("constructing upstream request");