Gemfile.lock in talkie-0.2.0 vs Gemfile.lock in talkie-0.3.0

@@ -1,10 +1,12 @@
 PATH
   remote: .
   specs:
     talkie (0.2.0)
       awesome_nested_set (~> 3.1)
+      blueprinter
+      oj
       rails (~> 5.0)
       sassc-rails (~> 2.1)
 
 GEM
   remote: https://rubygems.org/
@@ -55,10 +57,11 @@
       railties (>= 3.0)
       rspec-rails (>= 2.2)
     arel (9.0.0)
     awesome_nested_set (3.1.4)
       activerecord (>= 4.0.0, < 5.3)
+    blueprinter (0.18.0)
     builder (3.2.3)
     coderay (1.1.2)
     concurrent-ruby (1.1.5)
     crass (1.0.4)
     database_cleaner (1.7.0)
@@ -88,9 +91,10 @@
     mini_portile2 (2.4.0)
     minitest (5.11.3)
     nio4r (2.3.1)
     nokogiri (1.10.3)
       mini_portile2 (~> 2.4.0)
+    oj (3.7.12)
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     rack (2.0.7)
     rack-test (1.1.0)