diff --git a/CHANGELOG.md b/CHANGELOG.md
index cacdad1890..a3501160eb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,8 @@
 # New Relic Ruby Agent Release Notes
 
-## dev
+## v9.9.0
 
-Version <dev> introduces support for AWS Lambda serverless function observability, adds support for Elasticsearch 8.13.0, and adds the 'request.temperature' attribute to chat completion summaries in ruby-openai instrumentation.
+Version 9.9.0 introduces support for AWS Lambda serverless function observability, adds support for Elasticsearch 8.13.0, and adds the 'request.temperature' attribute to chat completion summaries in ruby-openai instrumentation.
 
 - **Feature: Serverless Mode for AWS Lambda**
 
diff --git a/lib/new_relic/version.rb b/lib/new_relic/version.rb
index 11bd098d45..fe4e558bf0 100644
--- a/lib/new_relic/version.rb
+++ b/lib/new_relic/version.rb
@@ -6,7 +6,7 @@
 module NewRelic
   module VERSION # :nodoc:
     MAJOR = 9
-    MINOR = 8
+    MINOR = 9
     TINY = 0
 
     STRING = "#{MAJOR}.#{MINOR}.#{TINY}"
diff --git a/newrelic.yml b/newrelic.yml
index 472e2be238..3941eda0b5 100644
--- a/newrelic.yml
+++ b/newrelic.yml
@@ -629,6 +629,12 @@ common: &default_settings
   # before shutting down.
   # send_data_on_exit: true
 
+  # If true, the agent will operate in a streamlined mode suitable for use with
+  # short-lived serverless functions. NOTE: Only AWS Lambda functions are supported
+  # currently and this option is not intended for use without New Relic's Ruby
+  # Lambda layer offering.
+  # serverless_mode.enabled: false
+
   # An array of strings that will collectively serve as a denylist for filtering
   # which Sidekiq job arguments get reported to New Relic. To capture any Sidekiq
   # arguments, 'job.sidekiq.args.*' must be added to the separate