diff --git a/Gemfile.lock b/Gemfile.lock
index 443d8f9..dd9f1c9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,7 +2,6 @@ PATH
   remote: .
   specs:
     puma-status (1.6)
-      colorize (~> 1.1)
       net_http_unix (~> 0.2)
       parallel (~> 1)
 
@@ -10,7 +9,6 @@ GEM
   remote: https://rubygems.org/
   specs:
     climate_control (0.2.0)
-    colorize (1.1.0)
     diff-lcs (1.5.0)
     net_http_unix (0.2.2)
     parallel (1.24.0)
diff --git a/lib/helpers.rb b/lib/helpers.rb
index ba14441..8f345ec 100644
--- a/lib/helpers.rb
+++ b/lib/helpers.rb
@@ -1,5 +1,3 @@
-require 'colorize'
-
 def debug(str)
   puts str if ENV.key?('DEBUG')
 end
@@ -14,7 +12,16 @@ def red(str)
 
 def colorize(str, color_name)
   return str if ENV.key?('NO_COLOR')
-  str.to_s.colorize(color_name)
+  case color_name
+  when :red
+    "\e[0;31;49m#{str}\e[0m"
+  when :yellow
+    "\e[0;33;49m#{str}\e[0m"
+  when :green
+    "\e[0;32;49m#{str}\e[0m"
+  else
+    str
+  end
 end
 
 def color(critical, warn, value, str = nil)
diff --git a/puma-status.gemspec b/puma-status.gemspec
index 875d330..8db3e5e 100644
--- a/puma-status.gemspec
+++ b/puma-status.gemspec
@@ -12,7 +12,6 @@ Gem::Specification.new do |s|
   s.require_paths = ["lib"]
   s.executables = ['puma-status']
 
-  s.add_runtime_dependency "colorize", '~> 1.1'
   s.add_runtime_dependency "net_http_unix", '~> 0.2'
   s.add_runtime_dependency "parallel", '~> 1'