Fix Git SSH Permission Denied After Upgrading to macOS 13 Ventura

Posted on 2022-10-27 Edited on 2026-04-29

macOS Ventura's newer OpenSSH defaults can reject older RSA/SHA-1 server setups, causing git push to fail with Permission denied (publickey).

After upgrading to macOS 13 Ventura, I suddenly found that git push stopped working and failed with:

1 2	Permission denied (publickey). fatal: Could not read from remote repository.

After repeatedly confirming that my public key was still present on GitLab, I found discussions مثل this one:

The likely cause is that the bundled OpenSSH_9.0p1 in macOS 13 disables RSA/SHA-1 by default.

There are two main ways to fix it.

Option 1: Generate a new key

This is the cleaner option, though it can be more expensive if you need to update the key in multiple places:

1	ssh-keygen -t ed25519

Edit ~/.ssh/config and add:

1
2
3

Host *
    HostkeyAlgorithms +ssh-rsa
    PubkeyAcceptedAlgorithms +ssh-rsa

This can also help when the remote server is too old to support newer algorithms.