diff --git a/routes/inbox.js b/routes/inbox.js
index f6221f6..d719e4f 100644
--- a/routes/inbox.js
+++ b/routes/inbox.js
@@ -27,7 +27,8 @@ function signAndSend(message, name, domain, req, res, targetDomain) {
     signer.end();
     const signature = signer.sign(privkey);
     const signature_b64 = signature.toString('base64');
-    let header = `keyId="https://${domain}/u/${name}",headers="(request-target) host date digest",signature="${signature_b64}"`;
+    const algorithm = 'rsa-sha256';
+    let header = `keyId="https://${domain}/u/${name}",algorithm="${algorithm}",headers="(request-target) host date digest",signature="${signature_b64}"`;
     console.log('signature:',header);
     console.log('message:',message);
 
diff --git a/updateFeeds.js b/updateFeeds.js
index a8e5a6d..39c5aca 100644
--- a/updateFeeds.js
+++ b/updateFeeds.js
@@ -182,7 +182,8 @@ function signAndSend(message, name, domain, req, res, targetDomain, inbox) {
     signer.end();
     const signature = signer.sign(privkey);
     const signature_b64 = signature.toString('base64');
-    let header = `keyId="https://${domain}/u/${name}",headers="(request-target) host date digest",signature="${signature_b64}"`;
+    const algorithm = 'rsa-sha256';
+    let header = `keyId="https://${domain}/u/${name}",algorithm="${algorithm}",headers="(request-target) host date digest",signature="${signature_b64}"`;
     //console.log('signature:',header);
     request({
       url: inbox,