diff --git a/Gemfile b/Gemfile
index 48e1df72..75e2ce6e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -29,6 +29,7 @@ gem "fog-local"
 gem "haml", "~> 5.0"
 gem "hcaptcha", "~> 7.0"
 gem "mini_magick"
+gem "oj"
 gem "rqrcode"
 
 gem "rolify", "~> 6.0"
diff --git a/Gemfile.lock b/Gemfile.lock
index db94a7a1..df941d4b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -320,6 +320,7 @@ GEM
       nenv (~> 0.1)
       shellany (~> 0.0)
     oauth (0.5.8)
+    oj (3.13.17)
     omniauth (2.1.0)
       hashie (>= 3.4.6)
       rack (>= 2.2.3)
@@ -605,6 +606,7 @@ DEPENDENCIES
   letter_opener
   lograge
   mini_magick
+  oj
   omniauth
   omniauth-rails_csrf_protection (~> 1.0)
   omniauth-twitter
diff --git a/config/initializers/oj.rb b/config/initializers/oj.rb
new file mode 100644
index 00000000..8c00f045
--- /dev/null
+++ b/config/initializers/oj.rb
@@ -0,0 +1 @@
+Oj.optimize_rails