Below is a list of the changes included in the SC-Spring-2026.9 release of Sound Transit GTFS data.

Schedule Changes
* 1 and 2 Lines
  * Extended service on July 3rd and 4th for Independence Day
* Sounder
  * Updated N Line service on FIFA match days

Route Changes
* none

Stop Changes
* Corrected SODO platform locations
* More accurate station entrance locations for 7 stations

Other Changes
* none