v3.1.6
- Updated descriptions for the International Eagle 9900i.
- Updated the "manifest.sii" file to bring the in-game mod manager version numbering in-line with the version number on the Change Notes tab of the mod's Steam Workshop page.

v3.1.5
- Updated the Features section of the description to remove an outdated note about Convoy Mode compatibility for the add-on Train Horn.
- Added a Truck Mod Compatibility note to the Feature section of the description.
- Removed the 1.37 Compatibility package. The game is nearing 7 major updates since they changed certain files from .sii to .sui, if you are not on the latest update of the game, I'm sorry.

v3.1.4
- Updated the Convoy Mode Compatibility section of the description.

v3.1.3
- Updated description for the International LT, and clarified the description for trucks with no additional slots.

v3.1.2
- Added a Convoy Mode Compatibility section to the description.

v3.1
- Properly formatted the in-game mod manager mod description file.

v3.0
- Added a new add-on Train Horn, utilizing the Freightliner Cascadia's default air horn sound.
- Updated description.

v2.0
- Added support for the Western Star 49X branded air horn.

v1.1
- Mod description fixes.

v1.0 Initial Release.
- Mod currently contains a version for 1.37, and a separate version for 1.38 Open Beta, as the file type changed from .sii in 1.37, to .sui in 1.38. The game will automatically detect what version of the mod to use.