old_contents: MAJOR_VERSION = 1
  MINOR_VERSION = 8
  VERSION = "{MAJOR_VERSION}.{MINOR_VERSION}".format_map(locals())
  
new_contents: MAJOR_VERSION = 1
  MINOR_VERSION = 9
  VERSION = "{MAJOR_VERSION}.{MINOR_VERSION}".format_map(locals())
  
subject: Update version to 1.9