CHANGELOG.md in opentelemetry-instrumentation-graphql-0.26.8 vs CHANGELOG.md in opentelemetry-instrumentation-graphql-0.27.0

@@ -1,6 +1,10 @@
 # Release History: opentelemetry-instrumentation-graphql
 
+### v0.27.0 / 2023-11-28
+
+* CHANGED: Performance optimization cache attribute hashes [#723](https://github.com/open-telemetry/opentelemetry-ruby-contrib/pull/723)
+
 ### v0.26.8 / 2023-11-23
 
 * CHANGED: Applied Rubocop Performance Recommendations [#727](https://github.com/open-telemetry/opentelemetry-ruby-contrib/pull/727)
 
 ### v0.26.7 / 2023-09-27