diff --git a/ansible/roles/package-upgrade/files/install-xcode.sh b/ansible/roles/package-upgrade/files/install-xcode.sh
index d29dfe5c6..a84a84e05 100755
--- a/ansible/roles/package-upgrade/files/install-xcode.sh
+++ b/ansible/roles/package-upgrade/files/install-xcode.sh
@@ -1,4 +1,8 @@
 #!/bin/bash
+
+#Copyright (c) 2013 rtrouton
+#source: https://github.com/rtrouton/rtrouton_scripts/blob/126d22503b862d02869154b444d071382827a250/rtrouton_scripts/install_xcode_command_line_tools/install_xcode_command_line_tools.sh
+
 osx_vers=$(sw_vers -productVersion | awk -F "." '{print $2}')
 cmd_line_tools_temp_file="/tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress"