diff --git a/Gemfile b/Gemfile
index f1c77a63..1b882aab 100644
--- a/Gemfile
+++ b/Gemfile
@@ -202,7 +202,7 @@ group :development do
   gem 'guard-rspec', '~> 4.2.8'
   gem 'spring-commands-rspec'
   # for static code analisys
-  gem 'rubocop', require: false
+  gem 'rubocop', '~> 0.48.1', require: false
   # as database
   gem 'sqlite3'
   # to open mails
diff --git a/Gemfile.lock b/Gemfile.lock
index 581e0d4c..3bc396d4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -58,7 +58,7 @@ GEM
       user_agent_parser
       uuidtools
     arel (6.0.3)
-    ast (2.2.0)
+    ast (2.3.0)
     autoprefixer-rails (5.1.9)
       execjs
       json
@@ -230,7 +230,7 @@ GEM
       thor (>= 0.14, < 2.0)
     jquery-ui-rails (4.2.1)
       railties (>= 3.2.16)
-    json (1.8.3)
+    json (1.8.6)
     json-schema (2.5.0)
       addressable (~> 2.3)
     jwt (1.0.0)
@@ -261,7 +261,7 @@ GEM
       rake
     mini_magick (4.5.1)
     mini_portile2 (2.1.0)
-    minitest (5.9.0)
+    minitest (5.10.1)
     momentjs-rails (2.8.1)
       railties (>= 3.1)
     monetize (1.4.0)
@@ -282,7 +282,6 @@ GEM
     nio4r (1.2.1)
     nokogiri (1.7.1)
       mini_portile2 (~> 2.1.0)
-      pkg-config (~> 1.1.7)
     oauth2 (0.9.4)
       faraday (>= 0.8, < 0.10)
       jwt (~> 1.0)
@@ -314,7 +313,7 @@ GEM
       activerecord (>= 3.0, < 6.0)
       activesupport (>= 3.0, < 6.0)
       request_store (~> 1.1)
-    parser (2.3.0.3)
+    parser (2.4.0.0)
       ast (~> 2.2)
     pdf-core (0.2.5)
     phantomjs (2.1.1.0)
@@ -322,7 +321,6 @@ GEM
       actionpack
       activesupport
       rails (>= 3.0.0)
-    pkg-config (1.1.7)
     poltergeist (1.9.0)
       capybara (~> 2.1)
       cliver (~> 0.3.1)
@@ -375,9 +373,9 @@ GEM
     rails-assets-waypoints (4.0.0)
     rails-deprecated_sanitizer (1.0.3)
       activesupport (>= 4.2.0.alpha)
-    rails-dom-testing (1.0.7)
+    rails-dom-testing (1.0.8)
       activesupport (>= 4.2.0.beta, < 5.0)
-      nokogiri (~> 1.6.0)
+      nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
     rails-html-sanitizer (1.0.3)
       loofah (~> 2.0)
@@ -396,7 +394,7 @@ GEM
       activesupport (= 4.2.7.1)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rainbow (2.1.0)
+    rainbow (2.2.1)
     rake (10.5.0)
     rb-fsevent (0.9.4)
     rb-inotify (0.9.4)
@@ -442,15 +440,15 @@ GEM
       rspec-mocks (~> 3.0.0)
       rspec-support (~> 3.0.0)
     rspec-support (3.0.2)
-    rubocop (0.37.0)
-      parser (>= 2.3.0.2, < 3.0)
+    rubocop (0.48.1)
+      parser (>= 2.3.3.1, < 3.0)
       powerpack (~> 0.1)
       rainbow (>= 1.99.1, < 3.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (~> 0.3)
+      unicode-display_width (~> 1.0, >= 1.0.1)
     ruby-oembed (0.8.14)
     ruby-openid (2.5.0)
-    ruby-progressbar (1.7.5)
+    ruby-progressbar (1.8.1)
     rubyzip (1.2.1)
     safe_yaml (1.0.4)
     sass (3.2.19)
@@ -493,7 +491,7 @@ GEM
     term-ansicolor (1.3.2)
       tins (~> 1.0)
     thor (0.19.1)
-    thread_safe (0.3.5)
+    thread_safe (0.3.6)
     tilt (1.4.1)
     timecop (0.7.1)
     timers (1.1.0)
@@ -502,14 +500,14 @@ GEM
     ttfunk (1.1.1)
     turbolinks (2.5.3)
       coffee-rails
-    tzinfo (1.2.2)
+    tzinfo (1.2.3)
       thread_safe (~> 0.1)
     uglifier (3.0.0)
       execjs (>= 0.3.0, < 3)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.2)
-    unicode-display_width (0.3.1)
+    unicode-display_width (1.2.1)
     unicode_utils (1.4.0)
     unobtrusive_flash (3.1.0)
       railties
@@ -619,7 +617,7 @@ DEPENDENCIES
   rolify
   rspec-activemodel-mocks
   rspec-rails
-  rubocop
+  rubocop (~> 0.48.1)
   ruby-oembed
   sass-rails (>= 4.0.2)
   selectize-rails
@@ -639,5 +637,4 @@ DEPENDENCIES
   whenever
 
 BUNDLED WITH
-   1.14.3
-
+   1.14.5