1 files changed, 7 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/logger.rb b/activesupport/lib/active_support/logger.rb
index 7626b28108..de48e717b6 100644
--- a/activesupport/lib/active_support/logger.rb
+++ b/activesupport/lib/active_support/logger.rb
@@ -1,8 +1,10 @@
 require 'active_support/logger_silence'
+require 'active_support/logger_thread_safe_level'
 require 'logger'
 
 module ActiveSupport
   class Logger < ::Logger
+    include ActiveSupport::LoggerThreadSafeLevel
     include LoggerSilence
 
     # Returns true if the logger destination matches one of the sources
@@ -48,6 +50,11 @@ module ActiveSupport
           logger.level = level
           super(level)
         end
+
+        define_method(:local_level=) do |level|
+          logger.local_level = level if logger.respond_to?(:local_level=)
+          super(level) if respond_to?(:local_level=)
+        end
       end
     end