diff --git a/Gemfile.lock b/Gemfile.lock
index 2108d4e..bdcc448 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GEM
       unf (>= 0.0.5, < 1.0.0)
     http-cookie (1.0.3)
       domain_name (~> 0.5)
-    json (2.1.0)
+    json (2.4.1)
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
@@ -23,7 +23,7 @@ GEM
     public_suffix (3.0.3)
     rainbow (2.2.2)
       rake
-    rake (12.3.1)
+    rake (12.3.3)
     rest-client (2.0.2)
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
@@ -49,7 +49,8 @@ DEPENDENCIES
   byebug
   csv
   date
-  json (~> 2.1.0)
+  json (~> 2.4.0)
+  rake (>= 12.3.3)
   rest-client
   rubocop (~> 0.51.0)