diff --git a/.rubocop.yml b/.rubocop.yml
index c3f3d7bca66ed9f5f3708445061ea387341eda40..319efe7e0dc4ac72b7ff543cea76ce2d4dde98cb 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -74,7 +74,7 @@ Style/BlockComments:
 
 Style/BlockEndNewline:
   Description: 'Put end statement of multiline block on its own line.'
-  Enabled: false
+  Enabled: true
 
 Style/Blocks:
   Description: >-
@@ -82,7 +82,7 @@ Style/Blocks:
                 always ugly).
                 Prefer {...} over do...end for single-line blocks.
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#single-line-blocks'
-  Enabled: false
+  Enabled: true
 
 Style/BracesAroundHashParameters:
   Description: 'Enforce braces style around hash parameters.'
diff --git a/lib/api/api_guard.rb b/lib/api/api_guard.rb
index be3d053efca6c1d9958841cc060fb5a83e35126f..cb20bf0720d4c9a0440ea55f63e406bc84ae880f 100644
--- a/lib/api/api_guard.rb
+++ b/lib/api/api_guard.rb
@@ -120,7 +120,7 @@ module APIGuard
     end
 
     def oauth2_bearer_token_error_handler
-      Proc.new {|e|
+      Proc.new do |e|
         response = case e
           when MissingTokenError
             Rack::OAuth2::Server::Resource::Bearer::Unauthorized.new
@@ -150,7 +150,7 @@ module APIGuard
           end
 
         response.finish
-      }
+      end
     end
   end
 
diff --git a/lib/api/internal.rb b/lib/api/internal.rb
index a999cff09c045da463c21340872c7a21728943f9..7a89a26facc8d8f974b12c19bdda5811de3f51d8 100644
--- a/lib/api/internal.rb
+++ b/lib/api/internal.rb
@@ -1,9 +1,7 @@
 module API
   # Internal access API
   class Internal < Grape::API
-    before {
-      authenticate_by_gitlab_shell_token!
-    }
+    before { authenticate_by_gitlab_shell_token! }
 
     namespace 'internal' do
       # Check if git command is allowed to project
diff --git a/lib/api/namespaces.rb b/lib/api/namespaces.rb
index f9f2ed90ccc357ca49d1e0a436411f73b0888463..b90ed6af5fbe6e32f92a65e57df72f3a34d49c22 100644
--- a/lib/api/namespaces.rb
+++ b/lib/api/namespaces.rb
@@ -1,10 +1,10 @@
 module API
   # namespaces API
   class Namespaces < Grape::API
-    before {
+    before do
       authenticate!
       authenticated_as_admin!
-    }
+    end
 
     resource :namespaces do
       # Get a namespaces list
diff --git a/lib/api/system_hooks.rb b/lib/api/system_hooks.rb
index 3e239c5afe773502151d31ae109f31fd6934abc6..518964db50d3739a5472771b9f1f3a8e0ab9b1e4 100644
--- a/lib/api/system_hooks.rb
+++ b/lib/api/system_hooks.rb
@@ -1,10 +1,10 @@
 module API
   # Hooks API
   class SystemHooks < Grape::API
-    before {
+    before do
       authenticate!
       authenticated_as_admin!
-    }
+    end
 
     resource :hooks do
       # Get the list of system hooks