diff --git a/.circleci/config.yml b/.circleci/config.yml
index 40921cd8..9633e759 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1,6 +1,6 @@
 docker: &docker
   docker:
-    - image: circleci/ruby:2.5.1-node-browsers
+    - image: circleci/ruby:2.5.3-node-browsers
       environment:
         TZ: '/usr/share/zoneinfo/Asia/Istanbul'
         RAILS_ENV: beta
@@ -87,4 +87,4 @@ workflows:
             - karma
           filters:
             branches:
-              only: master
\ No newline at end of file
+              only: master
diff --git a/.ruby-version b/.ruby-version
index 4fd0fe3c..aedc15bb 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.5.1
\ No newline at end of file
+2.5.3
diff --git a/Gemfile b/Gemfile
index 89aa50e9..81c8a644 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,7 +3,7 @@
 source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-ruby '2.5.1'
+ruby '2.5.3'
 
 gem 'active_model_serializers'
 gem 'bootsnap', '>= 1.1.0', require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index c2c6c080..51c549a6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -24,7 +24,7 @@ GEM
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    active_model_serializers (0.10.7)
+    active_model_serializers (0.10.8)
       actionpack (>= 4.1, < 6)
       activemodel (>= 4.1, < 6)
       case_transform (>= 0.2)
@@ -74,7 +74,7 @@ GEM
     coderay (1.1.2)
     coercible (1.0.0)
       descendants_tracker (~> 0.0.1)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.3)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     crass (1.0.4)
@@ -101,14 +101,14 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
-    loofah (2.2.2)
+    loofah (2.2.3)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
       mini_mime (>= 0.1.1)
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
-    method_source (0.9.0)
+    method_source (0.9.1)
     mimemagic (0.3.2)
     mini_mime (1.0.1)
     mini_portile2 (2.3.0)
@@ -120,18 +120,18 @@ GEM
       mini_portile2 (~> 2.3.0)
     nori (2.6.0)
     parallel (1.12.1)
-    parser (2.5.1.2)
+    parser (2.5.3.0)
       ast (~> 2.4.0)
     pg (0.18.4)
     powerpack (0.1.2)
-    pry (0.11.3)
+    pry (0.12.0)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    pry-rails (0.3.6)
+    pry-rails (0.3.7)
       pry (>= 0.10.4)
     public_suffix (3.0.3)
     puma (3.12.0)
-    rack (2.0.5)
+    rack (2.0.6)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.1)
@@ -170,14 +170,14 @@ GEM
       rainbow (>= 2.0, < 4.0)
     rollbar (2.18.0)
       multi_json
-    rubocop (0.59.2)
+    rubocop (0.60.0)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
       parser (>= 2.5, != 2.5.1.1)
       powerpack (~> 0.1)
       rainbow (>= 2.2.2, < 4.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (~> 1.0, >= 1.0.1)
+      unicode-display_width (~> 1.4.0)
     ruby-progressbar (1.10.0)
     ruby_dep (1.5.0)
     safe_yaml (1.0.4)
@@ -197,7 +197,7 @@ GEM
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
-    thor (0.20.0)
+    thor (0.20.3)
     thread_safe (0.3.6)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
@@ -247,7 +247,7 @@ DEPENDENCIES
   webmock
 
 RUBY VERSION
-   ruby 2.5.1p57
+   ruby 2.5.3p105
 
 BUNDLED WITH
-   1.16.6
+   1.17.1
diff --git a/app/controllers/kps/verifications_controller.rb b/app/controllers/kps/verifications_controller.rb
index 0bcd164f..1d1ef3b3 100644
--- a/app/controllers/kps/verifications_controller.rb
+++ b/app/controllers/kps/verifications_controller.rb
@@ -8,9 +8,9 @@ class VerificationsController < ApplicationController
 
     def identities
       render_as_json @verifications.identities(
-        id_number:     identities_params.require(:id_number),
-        first_name:    identities_params.require(:first_name),
-        last_name:     identities_params.require(:last_name),
+        id_number: identities_params.require(:id_number),
+        first_name: identities_params.require(:first_name),
+        last_name: identities_params.require(:last_name),
         year_of_birth: identities_params.require(:year_of_birth)
       )
     end
diff --git a/app/controllers/osym/examination_controller.rb b/app/controllers/osym/examination_controller.rb
index 07b519f9..b874eb81 100644
--- a/app/controllers/osym/examination_controller.rb
+++ b/app/controllers/osym/examination_controller.rb
@@ -13,8 +13,8 @@ def groups
     def result_informations
       render_as_json @examination.result_informations(
         id_number: secure_params.require(:id_number),
-        year:      secure_params.require(:year),
-        group_id:  secure_params.require(:group_id)
+        year: secure_params.require(:year),
+        group_id: secure_params.require(:group_id)
       )
     end
 
diff --git a/app/services/lib/services/osym/examination.rb b/app/services/lib/services/osym/examination.rb
index 4146732a..90d69dd7 100644
--- a/app/services/lib/services/osym/examination.rb
+++ b/app/services/lib/services/osym/examination.rb
@@ -10,7 +10,7 @@ def initialize(username, password)
           WSDL_URL,
           savon_options: {
             basic_auth: [username, password],
-            wsse_auth:  [username, password]
+            wsse_auth: [username, password]
           }
         )
       end
diff --git a/doc/development/img/application.png b/doc/development/img/application.png
index d3f59f9e..08a51884 100644
Binary files a/doc/development/img/application.png and b/doc/development/img/application.png differ
diff --git a/doc/development/img/architecture.png b/doc/development/img/architecture.png
index a883e76a..d86727e4 100644
Binary files a/doc/development/img/architecture.png and b/doc/development/img/architecture.png differ