diff --git a/app.json b/app.json
index c32d3a4..f9b11cb 100644
--- a/app.json
+++ b/app.json
@@ -5,7 +5,7 @@
   "repository": "https://github.com/errbit/errbit",
   "env": {
     "ERRBIT_ENFORCE_SSL": "true",
-    "GEMFILE_RUBY_VERSION": "2.2.3",
+    "GEMFILE_RUBY_VERSION": "2.2.4",
     "SECRET_KEY_BASE": {
       "generator": "secret"
     },
diff --git a/docs/deployment/heroku.md b/docs/deployment/heroku.md
index a5e4df9..a07512e 100644
--- a/docs/deployment/heroku.md
+++ b/docs/deployment/heroku.md
@@ -33,7 +33,7 @@ git commit -m "Update db/seeds.rb with initial login"
 heroku apps:create
 heroku addons:create mongolab:sandbox
 heroku addons:create sendgrid:starter
-heroku config:set GEMFILE_RUBY_VERSION=2.2.3
+heroku config:set GEMFILE_RUBY_VERSION=2.2.4
 heroku config:set SECRET_KEY_BASE="$(bundle exec rake secret)"
 heroku config:set ERRBIT_HOST=some-hostname.example.com
 heroku config:set ERRBIT_EMAIL_FROM=example@example.com
--
libgit2 0.21.2