HHVM 4.135 is released! HHVM 4.130–4.134 remain supported, as do the 4.102 and 4.128 LTS releases.

This release primarily contains stability and performance improvements, and work towards future features that are not yet supported.


  • If using Watchman, fixed a potential deadlock when connecting.

Breaking Changes

  • If a function intercept handler throws an exception, the intercepted functions’ exception handler is no longer used.

Future Changes

  • We are now actively working towards removing support for ‘partial’ mode.