diff --git a/src/dispatcher.rs b/src/dispatcher.rs
index daa18d97..f9411e61 100644
--- a/src/dispatcher.rs
+++ b/src/dispatcher.rs
@@ -83,7 +83,7 @@ impl Dispatcher {
 				let signed_string = format!("(request-target): post {request_target}\nhost: {host}\ndate: {date}");
 				signer.update(signed_string.as_bytes()).unwrap();
 				let signature = base64::prelude::BASE64_URL_SAFE.encode(signer.sign_to_vec().unwrap());
-				let signature_header = format!("keyId=\"{}\",headers=\"(request-target) host date\",signature=\"{signature}\"", delivery.actor);
+				let signature_header = format!("keyId=\"{}\",algorithm=\"rsa-sha256\",headers=\"(request-target) host date\",signature=\"{signature}\"", delivery.actor);
 
 				if let Err(e) = reqwest::Client::new()
 					.post(&delivery.target)