diff --git a/lib/xcode/install.rb b/lib/xcode/install.rb
index 0eefb97..3edc90f 100644
--- a/lib/xcode/install.rb
+++ b/lib/xcode/install.rb
@@ -225,7 +225,6 @@ def seedlist
     end
 
     def install_dmg(dmg_path, suffix = '', switch = true, clean = true)
-      prompt = "Please authenticate for Xcode installation.\nPassword: "
       xcode_path = "/Applications/Xcode#{suffix}.app"
 
       if dmg_path.extname == '.xip'
@@ -233,9 +232,9 @@ def install_dmg(dmg_path, suffix = '', switch = true, clean = true)
         xcode_orig_path = File.join(Dir.pwd, 'Xcode.app')
         xcode_beta_path = File.join(Dir.pwd, 'Xcode-beta.app')
         if Pathname.new(xcode_orig_path).exist?
-          `sudo -p "#{prompt}" mv "#{xcode_orig_path}" "#{xcode_path}"`
+          `mv "#{xcode_orig_path}" "#{xcode_path}"`
         elsif Pathname.new(xcode_beta_path).exist?
-          `sudo -p "#{prompt}" mv "#{xcode_beta_path}" "#{xcode_path}"`
+          `mv "#{xcode_beta_path}" "#{xcode_path}"`
         else
           out = <<-HELP
 No `Xcode.app(or Xcode-beta.app)` found in XIP. Please remove #{dmg_path} if you
@@ -260,14 +259,14 @@ def install_dmg(dmg_path, suffix = '', switch = true, clean = true)
           return
         end
 
-        `sudo -p "#{prompt}" ditto "#{source}" "#{xcode_path}"`
+        `ditto "#{source}" "#{xcode_path}"`
         `umount "/Volumes/Xcode"`
       end
 
       xcode = InstalledXcode.new(xcode_path)
 
       unless xcode.verify_integrity
-        `sudo rm -rf #{xcode_path}`
+        `rm -rf #{xcode_path}`
         return
       end
 
@@ -276,8 +275,8 @@ def install_dmg(dmg_path, suffix = '', switch = true, clean = true)
       xcode.install_components
 
       if switch
-        `sudo rm -f #{SYMLINK_PATH}` unless current_symlink.nil?
-        `sudo ln -sf #{xcode_path} #{SYMLINK_PATH}` unless SYMLINK_PATH.exist?
+        `rm -f #{SYMLINK_PATH}` unless current_symlink.nil?
+        `ln -sf #{xcode_path} #{SYMLINK_PATH}` unless SYMLINK_PATH.exist?
 
         `sudo xcode-select --switch #{xcode_path}`
         puts `xcodebuild -version`
@@ -330,8 +329,8 @@ def rm_list_cache
 
     def symlink(version)
       xcode = installed_versions.find { |x| x.version == version }
-      `sudo rm -f #{SYMLINK_PATH}` unless current_symlink.nil?
-      `sudo ln -sf #{xcode.path} #{SYMLINK_PATH}` unless xcode.nil? || SYMLINK_PATH.exist?
+      `rm -f #{SYMLINK_PATH}` unless current_symlink.nil?
+      `ln -sf #{xcode.path} #{SYMLINK_PATH}` unless xcode.nil? || SYMLINK_PATH.exist?
     end
 
     def symlinks_to
diff --git a/lib/xcode/install/uninstall.rb b/lib/xcode/install/uninstall.rb
index ec6c46f..70deb97 100644
--- a/lib/xcode/install/uninstall.rb
+++ b/lib/xcode/install/uninstall.rb
@@ -25,7 +25,7 @@ def run
         installed_path = @installer.installed_versions.find { |x| x.version == @version }
         return if installed_path.nil? || installed_path.path.nil?
 
-        `sudo rm -rf #{installed_path.path}`
+        `rm -rf #{installed_path.path}`
 
         return unless @installer.symlinks_to == installed_path.path
         newest_version = @installer.installed_versions.last