diff --git a/src/requester.rs b/src/requester.rs
index 7f972e1..ef614f5 100644
--- a/src/requester.rs
+++ b/src/requester.rs
@@ -7,7 +7,7 @@ use std::error::Error;
 pub struct Requester;
 
 impl Requester {
-    pub async fn extract_body<T>(req: Request<Incoming>) -> Result<T, Box<dyn Error>>
+    pub async fn extract_body<T>(req: Request<Incoming>) -> Result<T, Box<dyn Error + Send + Sync>>
     where
         T: DeserializeOwned,
     {