diff --git a/lib/jasmine-core/jasmine.js b/lib/jasmine-core/jasmine.js
index a80df7b1..67ae3805 100644
--- a/lib/jasmine-core/jasmine.js
+++ b/lib/jasmine-core/jasmine.js
@@ -9872,5 +9872,5 @@ getJasmineRequireObj().UserContext = function(j$) {
 };
 
 getJasmineRequireObj().version = function() {
-  return '3.8.0';
+  return '3.9.0';
 };
diff --git a/lib/jasmine-core/version.rb b/lib/jasmine-core/version.rb
index f879e1d5..ccee40c5 100644
--- a/lib/jasmine-core/version.rb
+++ b/lib/jasmine-core/version.rb
@@ -4,6 +4,6 @@
 #
 module Jasmine
   module Core
-    VERSION = "3.8.0"
+    VERSION = "3.9.0"
   end
 end
diff --git a/package.json b/package.json
index 521249e7..84dd9372 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "jasmine-core",
   "license": "MIT",
-  "version": "3.8.0",
+  "version": "3.9.0",
   "repository": {
     "type": "git",
     "url": "https://github.com/jasmine/jasmine.git"
diff --git a/release_notes/3.9.0.md b/release_notes/3.9.0.md
new file mode 100644
index 00000000..b249f99c
--- /dev/null
+++ b/release_notes/3.9.0.md
@@ -0,0 +1,65 @@
+# Jasmine Core 3.9 Release Notes
+
+## New features and bug fixes
+
+* Fixed Trusted Types error in `j$.isError_` in Chromium-based browsers
+  * Merges [#1921](https://github.com/jasmine/jasmine/pull/1921) from @bjarkler
+  * Fixes [#1910](https://github.com/jasmine/jasmine/issues/1910)
+  * Fixes [#1653](https://github.com/jasmine/jasmine/issues/1653)
+
+* Better reporting of unhandled promise rejections with truthy but non-`Error`
+  reasons on Node
+* `Env#execute` returns a promise in environments that support promises
+* Renamed `failFast` and `oneFailurePerSpec` config props to `stopOnSpecFailure`
+  and `stopSpecOnExpectationFailure`
+
+  The new names are more self-explanatory and consistent with jasmine-npm. The
+  old names are deprecated but will still work until the next major release.
+
+* Split `boot.js` into two files to allow the env to be configured in between
+
+  This is mainly intended to support jasmine-browser-runner, which will load
+  a script that configures the env in between the two boot files (`boot0.js` and
+  `boot1.js`). The single-file `boot.js` will still be included until the next
+  major release.
+
+## Ruby deprecation
+
+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 the
+[jasmine-browser-runner](https://github.com/jasmine/jasmine-browser)
+npm package, which is the direct replacement for the `jasmine` gem.
+
+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.
+
+## Documentation updates
+
+* Added API docs for `Suite#id` and `Spec#id`
+* Marked `Env#hideDisabled` deprecated in jsdocs
+
+
+------
+
+## Supported environments
+
+jasmine-core 3.8.0 has been tested in the following environments.
+
+| Environment       | Supported versions |
+|-------------------|--------------------|
+| Node              | 10, 12, 14, 16     |
+| Safari            | 8-14               |
+| Chrome            | 92                 |
+| Firefox           | 91, 78, 68         |
+| Edge              | 92                 |
+| Internet Explorer | 10, 11             |
+
+
+_Release Notes generated with _[Anchorman](http://github.com/infews/anchorman)_