diff --git a/Gemfile b/Gemfile
index a7809c6..7546b75 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ gem 'sinatra-flash', '~> 0.3.0'
 gem 'ims-lti', '~> 1.1.4'
 gem 'dm-core'
 gem 'dm-migrations'
-gem 'json', '~> 1.8.6'
+gem 'json', '~> 2.3.0'
 gem 'encrypted_cookie'
 
 group :production do
diff --git a/Gemfile.lock b/Gemfile.lock
index 6cc6fd7..b551e81 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -29,7 +29,7 @@ GEM
     ims-lti (1.1.13)
       builder
       oauth (>= 0.4.5, < 0.6)
-    json (1.8.6)
+    json (2.3.0)
     multi_json (1.14.1)
     oauth (0.5.4)
     pg (1.2.3)
@@ -64,7 +64,7 @@ DEPENDENCIES
   dm-sqlite-adapter
   encrypted_cookie
   ims-lti (~> 1.1.4)
-  json (~> 1.8.6)
+  json (~> 2.3.0)
   pg
   sinatra (~> 1.4.4)
   sinatra-contrib (~> 1.4.2)