diff --git a/Gemfile b/Gemfile
index e856f59..4463783 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,7 +6,7 @@ git_source(:github) do |repo_name|
   "https://github.com/#{repo_name}.git"
 end
 gem 'byebug'
-gem 'json', '~> 2.4.0'
+gem 'json', '~> 2.3.0'
 gem 'rest-client'
 gem 'rubocop', '~> 0.51.0', require: false
 gem "rake", ">= 12.3.3"
diff --git a/Gemfile.lock b/Gemfile.lock
index c704a80..14ef69d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,7 +7,7 @@ GEM
       unf (>= 0.0.5, < 1.0.0)
     http-cookie (1.0.3)
       domain_name (~> 0.5)
-    json (2.1.0)
+    json (2.3.0)
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
@@ -18,7 +18,7 @@ GEM
     powerpack (0.1.2)
     rainbow (2.2.2)
       rake
-    rake (12.3.1)
+    rake (13.0.3)
     rest-client (2.0.2)
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
@@ -41,7 +41,8 @@ PLATFORMS
 
 DEPENDENCIES
   byebug
-  json (~> 2.1.0)
+  json (~> 2.3.0)
+  rake (>= 12.3.3)
   rest-client
   rubocop (~> 0.51.0)