diff --git a/.rubocop.yml b/.rubocop.yml
index eece9ec69d8d1681491612b286d6331309113ce4..784697aaaa897b8ce49c539b72ef7e62a3282acd 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -514,7 +514,7 @@ Style/SelfAssignment:
 
 # Don't use semicolons to terminate expressions.
 Style/Semicolon:
-  Enabled: false
+  Enabled: true
 
 # Checks for proper usage of fail and raise.
 Style/SignalException:
diff --git a/app/models/network/graph.rb b/app/models/network/graph.rb
index 1ac37e0307f8e683e4adadad3720c07954747764..39ffb2d8f8b3cca0d959b9607f1ec041da4f9dd0 100644
--- a/app/models/network/graph.rb
+++ b/app/models/network/graph.rb
@@ -164,7 +164,7 @@ module Network
           i != range.last &&
           @commits[i].spaces.include?(overlap_space)
 
-          return true;
+          return true
         end
       end
 
diff --git a/lib/gitlab/middleware/go.rb b/lib/gitlab/middleware/go.rb
index 50b0dd32380325268496a65674056c676d30f4a8..5764ab1565279617829350145d1b020286745955 100644
--- a/lib/gitlab/middleware/go.rb
+++ b/lib/gitlab/middleware/go.rb
@@ -39,7 +39,7 @@ module Gitlab
         request_url = URI.join(base_url, project_path)
         domain_path = strip_url(request_url.to_s)
 
-        "<!DOCTYPE html><html><head><meta content='#{domain_path} git #{request_url}.git' name='go-import'></head></html>\n";
+        "<!DOCTYPE html><html><head><meta content='#{domain_path} git #{request_url}.git' name='go-import'></head></html>\n"
       end
 
       def strip_url(url)