GitHub macOS Keychain credential update steps for developers

1. Updating GitHub credentials on macOS now requires editing or erasing the stored token in the Keychain, a step needed after any username or personal access token change [1].

2. At a glance |
   |---|---|
   | Credential helper | osxkeychain (built‑in macOS) [1] |
   | Update method | Edit or delete entry via Keychain Access app [2] |
   | Command‑line erase | git credential-osxkeychain erase [1] |
   | Recommended alternative | Git Credential Manager (handles 2FA) [1] |

How to update the stored token

GitHub stopped accepting password authentication for HTTPS in 2021, so developers must use a personal access token (PAT) [3]. When a PAT is changed, the macOS Keychain still holds the old token, causing authentication failures. To refresh it, open the Keychain Access app (Spotlight → “Keychain Access”), search for “github.com”, locate the “Internet password” entry, and either edit the stored token or delete the entry entirely. After deletion, the next Git operation will prompt for the new PAT, which will then be saved anew [2][3].

Command‑line alternative and future‑proofing

For users who prefer terminal workflows, the credential helper can be invoked directly to erase the stored entry:

git credential-osxkeychain erase
host=github.com
protocol=https

If successful, the command produces no output, confirming removal [1]. Subsequent Git commands will again request credentials, allowing the new PAT to be cached. GitHub recommends switching to the Git Credential Manager (GCM) for automated token handling and built‑in two‑factor authentication support, eliminating the need for manual PAT entry [1].

What to watch

• Ensure any PAT change is followed by a Keychain update to avoid authentication errors.
• Consider migrating to Git Credential Manager for seamless token refreshes and 2FA support.
• Monitor GitHub’s authentication policy updates, as further changes could affect credential storage methods.

Keeping the macOS Keychain in sync with GitHub credentials is essential for uninterrupted development workflows and aligns with GitHub’s move toward stronger, token‑based authentication.