diff --git a/README.md b/README.md
index 6b9c9603..7693207f 100644
--- a/README.md
+++ b/README.md
@@ -161,6 +161,7 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
 * [drive](https://github.com/odeke-em/drive) - Google Drive client for the commandline.
 * [env](https://github.com/codingconcepts/env) - Tag-based environment configuration for structs.
 * [flag](https://github.com/cosiner/flag) - Simple but powerful command line option parsing library for Go supporting subcommand.
+* [flagvar](https://github.com/sgreben/flagvar) - A collection of flag argument types for Go's standard `flag` package.
 * [go-arg](https://github.com/alexflint/go-arg) - Struct-based argument parsing in Go.
 * [go-flags](https://github.com/jessevdk/go-flags) - go command line option parser.
 * [gocmd](https://github.com/devfacet/gocmd) - Go library for building command line applications.