diff --git a/pkgs/mruby/README.md b/pkgs/mruby/README.md
index f3d6cda..149189d 100644
--- a/pkgs/mruby/README.md
+++ b/pkgs/mruby/README.md
@@ -6,3 +6,21 @@
 
 Binding to [libkernaux](https://github.com/tailix/libkernaux) - auxiliary
 library for kernel development.
+
+
+
+Install
+-------
+
+Add the following to your `build_config.rb`:
+
+```ruby
+MRuby::Build.new do |conf|
+  # ...
+  conf.gem github: 'tailix/libkernaux',
+           path: 'pkgs/mruby',
+           branch: 'v0.1.0',
+           checksum_hash: '3afe745485113ea7dbf892871a4318d58c6ab753'
+  # ...
+end
+```