old_contents: """Version information."""
  
  # The following line *must* be the last in the module, exactly as formatted:
  __version__ = "0.3.8"
  
new_contents: """Version information."""
  
  # The following line *must* be the last in the module, exactly as formatted:
  __version__ = "0.3.9"
  
subject: Update _version.py