diff --git a/share/ruby-build/mruby-3.1.0 b/share/ruby-build/mruby-3.1.0
new file mode 100644
index 00000000..6d82e45d
--- /dev/null
+++ b/share/ruby-build/mruby-3.1.0
@@ -0,0 +1 @@
+install_package "mruby-3.1.0" "https://github.com/mruby/mruby/archive/3.1.0.tar.gz#64ce0a967028a1a913d3dfc8d3f33b295332ab73be6f68e96d0f675f18c79ca8" mruby