diff --git a/src/sign.rs b/src/sign.rs
index e8afa7f0e490a4ac4a3238b3f9c8a8754712242d..d0d4776058d0d2b0a0576b9826743126c6a09ee3 100644
--- a/src/sign.rs
+++ b/src/sign.rs
@@ -68,11 +68,10 @@ impl SigType {
                 let k: salty::PublicKey = k.try_into().map_err(|_| Error::BadKey)?;
                 let s: &[u8; 64] = s.sig.0.try_into().map_err(|_| Error::BadSig)?;
                 let s: salty::Signature = s.into();
-                todo!("get verify_parts upstream");
-                // k.verify_parts(&s, |h| {
-                //     sshwire::hash_ser(h, msg, None).map_err(|_| salty::Error::ContextTooLong)
-                // })
-                // .map_err(|_| Error::BadSig)
+                k.verify_parts(&s, |h| {
+                    sshwire::hash_ser(h, msg, None).map_err(|_| salty::Error::ContextTooLong)
+                })
+                .map_err(|_| Error::BadSig)
             }
 
             (SigType::RSA256, PubKey::RSA(_k), Signature::RSA256(_s)) => {