diff --git a/Gemfile b/Gemfile
index c790cc162..e4195c786 100644
--- a/Gemfile
+++ b/Gemfile
@@ -59,7 +59,7 @@ gem 'link_header', '~> 0.0'
 gem 'mime-types', '~> 3.2', require: 'mime/types/columnar'
 gem 'nokogiri', '~> 1.8'
 gem 'nsa', '~> 0.2'
-gem 'oj', '~> 3.5'
+gem 'oj', '~> 3.6'
 gem 'ostatus2', '~> 2.0'
 gem 'ox', '~> 2.9'
 gem 'posix-spawn', git: 'https://github.com/rtomayko/posix-spawn', ref: '58465d2e213991f8afb13b984854a49fcdcc980c'
diff --git a/Gemfile.lock b/Gemfile.lock
index 4cc31923d..18c8b6846 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -359,7 +359,7 @@ GEM
       concurrent-ruby (~> 1.0.0)
       sidekiq (>= 3.5.0)
       statsd-ruby (~> 1.2.0)
-    oj (3.5.1)
+    oj (3.6.11)
     omniauth (1.8.1)
       hashie (>= 3.4.6, < 3.6.0)
       rack (>= 1.6.2, < 3)
@@ -707,7 +707,7 @@ DEPENDENCIES
   net-ldap (~> 0.10)
   nokogiri (~> 1.8)
   nsa (~> 0.2)
-  oj (~> 3.5)
+  oj (~> 3.6)
   omniauth (~> 1.2)
   omniauth-cas (~> 1.1)
   omniauth-saml (~> 1.10)