diff --git a/lib/null_logger.rb b/lib/null_logger.rb
index ee8a206..3aa8bac 100644
--- a/lib/null_logger.rb
+++ b/lib/null_logger.rb
@@ -5,9 +5,6 @@ def info(message)
   def error(message)
   end
 
-  def debug(message)
-  end
-
   def warn(message)
   end
 end
diff --git a/lib/stdout_logger.rb b/lib/stdout_logger.rb
index c64fb8b..5505930 100644
--- a/lib/stdout_logger.rb
+++ b/lib/stdout_logger.rb
@@ -13,11 +13,6 @@ def error(message)
     puts "\e[31m#{message}\e[0m"
   end
 
-  def debug(message)
-    # Blue text by using ANSI escape code
-    puts "\e[34m#{message}\e[0m"
-  end
-
   def warn(message)
     # Yellow text by using ANSI escape code
     puts "\e[33m#{message}\e[0m"
diff --git a/spec/lib/stdout_logger_spec.rb b/spec/lib/stdout_logger_spec.rb
index 56b0469..cbb8db8 100644
--- a/spec/lib/stdout_logger_spec.rb
+++ b/spec/lib/stdout_logger_spec.rb
@@ -18,13 +18,6 @@
     it { expect { error }.to output(/\e\[31m/).to_stdout }
   end
 
-  describe '#debug' do
-    subject(:debug) { logger.debug(message) }
-
-    it { expect { debug }.to output(/#{message}/).to_stdout }
-    it { expect { debug }.to output(/\e\[34m/).to_stdout }
-  end
-
   describe '#warn' do
     subject(:warn) { logger.warn(message) }
 
diff --git a/spec/support/memory_logger.rb b/spec/support/memory_logger.rb
index b3fe1d1..fb12eef 100644
--- a/spec/support/memory_logger.rb
+++ b/spec/support/memory_logger.rb
@@ -22,10 +22,6 @@ def warn(message)
     synchronize { @warn_messages << message }
   end
 
-  def debug(message)
-    synchronize { @debug_messages << message }
-  end
-
   private
 
   def synchronize(&)