fix gem version

Gemfile

@@ -20,13 +20,13 @@ gem 'puma', '~> 3.0'
 # Use Rack CORS for handling Cross-Origin Resource Sharing (CORS), making cross-origin AJAX possible
 gem 'rack-cors', '0.4.0'
 
-gem 'rack-attack'
+gem 'rack-attack', '5.0.1'
 
 gem 'active_model_serializers', '0.10.2'
 
-gem 'awesome_print'
+gem 'awesome_print', '1.7.0'
 
-gem 'swagger-docs'
+gem 'swagger-docs', '0.2.9'
 
 group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console
@@ -36,7 +36,7 @@ group :development, :test do
   gem 'rspec-rails', '3.5.2'
 
   # Use Factory Girl for generating random test data
-  gem 'factory_girl_rails'
+  gem 'factory_girl_rails', '4.7.0'
 end
 
 group :development do

Gemfile.lock

@@ -160,19 +160,19 @@ PLATFORMS
 
 DEPENDENCIES
   active_model_serializers (= 0.10.2)
-  awesome_print
+  awesome_print (= 1.7.0)
   byebug
-  factory_girl_rails
+  factory_girl_rails (= 4.7.0)
   listen (~> 3.0.5)
   pg (~> 0.18)
   puma (~> 3.0)
-  rack-attack
+  rack-attack (= 5.0.1)
   rack-cors (= 0.4.0)
   rails (~> 5.0.0, >= 5.0.0.1)
   rspec-rails (= 3.5.2)
   spring
   spring-watcher-listen (~> 2.0.0)
-  swagger-docs
+  swagger-docs (= 0.2.9)
   tzinfo-data
 
 BUNDLED WITH