diff --git a/jasmine.gemspec b/jasmine.gemspec
index b6691a52..a51f7fe7 100644
--- a/jasmine.gemspec
+++ b/jasmine.gemspec
@@ -37,7 +37,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rspec', '>= 2.5.0'
   s.add_development_dependency 'nokogiri'
 
-  s.add_dependency 'jasmine-core', '~> 3.8.0'
+  s.add_dependency 'jasmine-core', '~> 3.9.0'
   s.add_dependency 'rack', '>= 2.1.4'
   s.add_dependency 'webrick'
   s.add_dependency 'rake'
diff --git a/lib/jasmine/version.rb b/lib/jasmine/version.rb
index 7f023b9f..ae0ff18d 100644
--- a/lib/jasmine/version.rb
+++ b/lib/jasmine/version.rb
@@ -1,3 +1,3 @@
 module Jasmine
-  VERSION = "3.8.1"
+  VERSION = "3.9.0"
 end
diff --git a/release_notes/3.9.0.md b/release_notes/3.9.0.md
new file mode 100644
index 00000000..28d1e1c5
--- /dev/null
+++ b/release_notes/3.9.0.md
@@ -0,0 +1,28 @@
+# Jasmine Gem 3.9 Release Notes
+
+This release updates the jasmine-core dependency to 3.9.0. See the
+[jasmine-core release notes](https://github.com/jasmine/jasmine/blob/main/release_notes/3.9.0.md)
+for more information.
+
+## Deprecation, Webpacker support, and a path forward for Rails users
+
+The [jasmine-browser-runner](https://github.com/jasmine/jasmine-browser-runner)
+NPM package supports all of same use cases as the `jasmine` Ruby gem. It can
+also handle Webpacker, which isn't supported by the gem. See the [setup instructions, including Rails-specific steps](https://jasmine.github.io/setup/browser.html).
+
+The Jasmine Ruby gems are deprecated. There will be no further releases after
+the end of the Jasmine 3.x series. We recommend that most users migrate to 
+`jasmine-browser-runner`. If `jasmine-browser-runner` doesn't meet your needs, 
+one of these might:
+
+* The [jasmine](https://github.com/jasmine/jasmine-npm) npm package to run
+  specs in Node.js.
+* The [standalone distribution](https://github.com/jasmine/jasmine#installation)
+  to run specs in browsers with no additional tools.
+* The [jasmine-core](https://github.com/jasmine/jasmine) npm package if all
+  you need is the Jasmine assets. This is the direct equivalent of the
+  `jasmine-core` Ruby gem.
+
+------
+
+_Release Notes generated with _[Anchorman](http://github.com/infews/anchorman)_