README.md in google-cloud-tpu-v1-0.6.2 vs README.md in google-cloud-tpu-v1-0.7.0

@@ -74,10 +74,10 @@
 
 To browse ready to use code samples check [Google Cloud Samples](https://cloud.google.com/docs/samples).
 
 ## Supported Ruby Versions
 
-This library is supported on Ruby 2.6+.
+This library is supported on Ruby 2.7+.
 
 Google provides official support for Ruby versions that are actively supported
 by Ruby Core—that is, Ruby versions that are either in normal maintenance or
 in security maintenance, and not end of life. Older versions of Ruby _may_
 still work, but are unsupported and not recommended. See