BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//StackClock//Deadlines//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:GitHub deprecations (StackClock)
REFRESH-INTERVAL;VALUE=DURATION:PT6H
BEGIN:VEVENT
UID:change-01a1083c-b6db-76ac-9b36-ae858d1aceb6@stackclock.app
DTSTAMP:20261004T184559Z
DTSTART;VALUE=DATE:20261102
DTEND;VALUE=DATE:20261103
SUMMARY:GitHub: GitHub Actions: macOS 14 runner image retirement
DESCRIPTION:The macOS 14 runner image will be retired on November 2\, 2026.
  To raise awareness of the upcoming removal\, jobs using macOS 14 will tem
 porarily fail during the following scheduled brownout periods:\n\nOctober 
 5\, 14:00 UTC to October 6\, 00:00 UTC\n\nOctober 12\, 14:00 UTC to Octobe
 r 13\, 00:00 UTC\n\nOctober 16\, 14:00 UTC to October 17\, 00:00 UTC\n\nOc
 tober 19\, 14:00 UTC to October 20\, 00:00 UTC\n\nOctober 23\, 14:00 UTC t
 o October 24\, 00:00 UTC\n\nOctober 26\, 14:00 UTC to October 27\, 00:00 U
 TC\n\nOctober 29\, 14:00 UTC to October 30\, 00:00 UTC\n\nOctober 30\, 14:
 00 UTC to October 31\, 00:00 UTC\n\nThis deprecation includes the followin
 g labels:\n\nmacos-14\n\nmacos-14-large\n\nmacos-14-xlarge\n\nDuring the l
 ead-up to retirement\, GitHub may reduce macOS 14 runner capacity\, which 
 could result in longer queue times for jobs that continue to use these lab
 els.\n\nWhat you need to do\n\nUpdate your workflow files to use one of th
 e following macOS arm64 labels:\n\nmacos-latest ( macos-26 )\n\nmacos-15\n
 \nmacos-latest-xlarge ( macos-2
URL:https://stackclock.app/changes/01a1083c-b6db-76ac-9b36-ae858d1aceb6
TRANSP:TRANSPARENT
END:VEVENT
BEGIN:VEVENT
UID:change-01a1083c-b6d8-7ed4-97ba-66ba90ca7591@stackclock.app
DTSTAMP:20261004T184559Z
DTSTART;VALUE=DATE:20261130
DTEND;VALUE=DATE:20261201
SUMMARY:GitHub: Stateless GitHub App installation tokens rolled out
DESCRIPTION:The staged rollout of the stateless GitHub App installation tok
 en format\, which began on April 27\, 2026\, is complete. By default\, all
  newly minted GitHub App installation tokens will be in the stateless ghs_
 APPID_JWT format\, which makes token issuance and validation faster and im
 proves the reliability of the GitHub API.\n\nWhat’s changed\n\nInstallat
 ion tokens still start with the ghs_ prefix\, but they’re now about 520 
 characters long instead of 40.\n\nToken permissions\, repository scoping\,
  the one-hour expiration\, and the installation access token REST API endp
 oint are unchanged. Tokens minted before the change continue to work until
  they expire.\n\nWhat to expect going forward\n\nThe temporary X-GitHub-St
 ateless-S2S-Token request header\, which we introduced so you could valida
 te the new format on demand\, will be deprecated on November 30\, 2026. Af
 ter that date\, GitHub will no longer respect the header\, and all eligibl
 e apps will always receive stateless tokens. To learn more about the tempo
 rar
URL:https://stackclock.app/changes/01a1083c-b6d8-7ed4-97ba-66ba90ca7591
TRANSP:TRANSPARENT
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