diff --git a/README.md b/README.md
index a5f06c69..a95e16b3 100644
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+++ b/README.md
@@ -619,6 +619,7 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
 * [opc](https://github.com/qmuntal/opc) - Load Open Packaging Conventions (OPC) files for Go.
 * [pdfcpu](https://github.com/hhrutter/pdfcpu) - PDF processor.
 * [skywalker](https://github.com/dixonwille/skywalker) - Package to allow one to concurrently go through a filesystem with ease.
+* [stl](https://gitlab.com/russoj88/stl) - Modules to read and write STL (stereolithography) files.  Concurrent algorithm for reading.
 * [tarfs](https://github.com/posener/tarfs) - Implementation of the [`FileSystem` interface](https://godoc.org/github.com/kr/fs#FileSystem) for tar files.
 * [vfs](https://github.com/C2FO/vfs) - A pluggable, extensible, and opinionated set of filesystem functionality for Go across a number of filesystem types such as os, S3, and GCS.