diff --git a/Gemfile b/Gemfile
index 093f773..3231675 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,4 +10,6 @@ group :test do
   gem "coveralls", "~>0.8", require: false
   gem "simplecov", "~>0.10", require: false
   gem "codeclimate-test-reporter", "~>0.4"
+  # JSON 2.0.1 is ruby 2.0+
+  gem "json", "< 2.0"
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index cfbaf45..2b9e283 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -37,7 +37,7 @@ GEM
       oauth2 (~> 1.0.0)
     hashie (3.4.4)
     iniparse (1.4.2)
-    json (2.0.1)
+    json (1.8.3)
     jwt (1.5.4)
     multi_json (1.12.1)
     multi_xml (0.5.5)
@@ -97,6 +97,7 @@ DEPENDENCIES
   codeclimate-test-reporter (~> 0.4)
   coveralls (~> 0.8)
   github_changelog_generator!
+  json (< 2.0)
   overcommit
   rake
   rspec (>= 3.2)