diff --git a/Gemfile b/Gemfile
index 552f0fd..363c3d8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,6 +5,7 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
 ruby '2.5.1'
 
+gem 'oj'
 gem 'pry-rails'
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 5.2.1'
diff --git a/Gemfile.lock b/Gemfile.lock
index e2469a0..8dc5c61 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -107,6 +107,7 @@ GEM
     nio4r (2.3.1)
     nokogiri (1.8.4)
       mini_portile2 (~> 2.3.0)
+    oj (3.4.0)
     pg (0.21.0)
     pry (0.11.3)
       coderay (~> 1.1.0)
@@ -207,6 +208,7 @@ DEPENDENCIES
   ffaker
   jbuilder (~> 2.5)
   listen (>= 3.0.5, < 3.2)
+  oj
   pg
   pry-rails
   puma (~> 3.11)
diff --git a/config/initializers/oj.rb b/config/initializers/oj.rb
new file mode 100644
index 0000000..8c00f04
--- /dev/null
+++ b/config/initializers/oj.rb
@@ -0,0 +1 @@
+Oj.optimize_rails