Here are all updates, patches, bug fixes, and build info.

4.0.140

• Updated for the Houdini 21.0.729 production build.
• Fixing bug with license client that could cause the license save directory to be skipped when searching for a license file.
• Supports Houdini 20.0.896, 20.5.684, 21.0.671, 21.0.700, & 21.0.729 on Windows, macOS, & Linux.
• Cuda Version 12.2, Linux Driver 525.60.13+, Windows Driver 525.41+
• Released 01 June 2026
• Download 4.0.140

4.0.139

• Updating to the latest license client.
• Supports Houdini 20.0.896, 20.5.684, 21.0.631, 21.0.671, & 21.0.700 on Windows, macOS, & Linux.
• Cuda Version 12.2, Linux Driver 525.60.13+, Windows Driver 525.41+
• Released 09 May 2026
• Download 4.0.139

4.0.138

• Updated for the Houdini 21.0.700 production build.
• Fixing a bug with the benchmark node that caused it to fail on some systems.
• Supports Houdini 20.0.896, 20.5.684, 21.0.631, 21.0.671, & 21.0.700 on Windows, macOS, & Linux.
• Cuda Version 12.2, Linux Driver 525.60.13+, Windows Driver 525.41+