# Version 0.19.4 released

### 2019年02月01日 The Nim Team

The Nim team is happy to announce that the latest release of Nim, version 0.19.4, is now available. Nim is a systems programming language that focuses on performance, portability and expressiveness.

This is mostly a bugfix release of version 0.19.2. There are no breaking changes. The most important bugfixes are:

- The mark&sweep GC had a serious performance regression that has been fixed.
- The produced tarballs now support `koch tests`.
- Json escaping has been fixed.
- The documentation for `async` procs was missing, fixed.

## Installing 0.19.4

If you have installed a previous version of Nim using `choosenim`, getting Nim 0.19.4 is as easy as:

    $ choosenim update stable

If you don’t have it already, you can get `choosenim` by following these instructions or you can install Nim by following the instructions on our install page.

### Bugfixes

- Fixed “Latest HEAD segfaults when compiling Aporia” (#9889)
- Fixed “smtp module doesn’t support threads.” (#9728)
- Fixed “toInt doesn’t raise an exception” (#2764)
- Fixed “allow `import` inside `block`: makes N runnableExamples run N x faster, minimizes scope pollution” (#9300)
- Fixed “regression: CI failing `Error: unhandled exception: cannot open: /Users/travis/.cache/nim/docgen_sample_d/runnableExamples/docgen_sample_examples.nim [IOError]`” (#10188)
- Fixed “Discrepancy in Documentation About ‘f128 Type-Suffix” (#10213)
- Fixed “Performance regression with –gc:markandsweep” (#10271)
- Fixed “cannot call template/macros with varargs[typed] to varargs[untyped]” (#10075)
- Fixed “–embedsrc does not work on macos” (#10263)
- Fixed “terminal.nim colored output is not GCSAFE.” (#8294)
- Fixed “Path in error message has `..\..\..\..\..\` prefix since 0.19.0” (#9556)
- Fixed ““contributing” is listed as a module on theindex” (#10287)
- Fixed “[Regression] converter to string leads fail to compile on 0.19” (#9149)
- Fixed “oids counter starts at zero; spec says it should be random” (#2796)