Rakefile in rails_semantic_logger-1.7.0 vs Rakefile in rails_semantic_logger-1.8.0

@@ -3,14 +3,14 @@
 
 $LOAD_PATH.unshift File.expand_path("../lib", __FILE__)
 require 'rails_semantic_logger/version'
 
 task :gem do
-  system "gem build rails_semantic_logger.gemspec"
+  system 'gem build rails_semantic_logger.gemspec'
 end
 
 task :publish => :gem do
   system "git tag -a v#{RailsSemanticLogger::VERSION} -m 'Tagging #{RailsSemanticLogger::VERSION}'"
-  system "git push --tags"
+  system 'git push --tags'
   system "gem push rails_semantic_logger-#{RailsSemanticLogger::VERSION}.gem"
   system "rm rails_semantic_logger-#{RailsSemanticLogger::VERSION}.gem"
 end