diff --git a/extensions/ruby/package.json b/extensions/ruby/package.json
index a88b790d86f..4572f2526d8 100644
--- a/extensions/ruby/package.json
+++ b/extensions/ruby/package.json
@@ -12,7 +12,7 @@
 	"contributes": {
 		"languages": [{
 			"id": "ruby",
-			"extensions": [ ".rb", ".rbx", ".rjs", ".gemspec", ".rake", ".ru", ".erb",".podspec" ],
+			"extensions": [ ".rb", ".rbx", ".rjs", ".gemspec", ".rake", ".ru", ".erb", ".podspec", ".rbi" ],
 			"filenames": [ "rakefile", "gemfile", "guardfile", "podfile", "capfile" ],
 			"aliases": [ "Ruby", "rb" ],
 			"firstLine": "^#!\\s*/.*\\bruby\\b",