diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..6b4d157
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+2.2.3
\ No newline at end of file
diff --git a/Gemfile b/Gemfile
index df3b46e..5d5d690 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,5 +1,4 @@
 source 'https://rubygems.org'
-ruby '2.2.2'
 gemspec
 gem "octokit"
 gem "parseconfig"