diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 1ed3fbdcbe9..d9141eb341b 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "4.8.0"
+  ".": "4.9.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b99012cb319..129d0641f49 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,32 @@
 # Changelog
 
+## [4.9.0](https://github.com/shaka-project/shaka-player/compare/v4.8.0...v4.9.0) (2024-05-07)
+
+
+### Features
+
+* Add support for probing encryption scheme support ([#6506](https://github.com/shaka-project/shaka-player/issues/6506)) ([2dea350](https://github.com/shaka-project/shaka-player/commit/2dea350d7483ba2c68b900e983a37562c15b8257))
+* **DASH:** Add manifest.dash.enableFastSwitching config ([#6500](https://github.com/shaka-project/shaka-player/issues/6500)) ([2fc0c93](https://github.com/shaka-project/shaka-player/commit/2fc0c935c42cc5ef93e2a3c8644b7d0216cfad7b))
+* Improve default retry delay for Low Latency ([#6514](https://github.com/shaka-project/shaka-player/issues/6514)) ([5f8e7fd](https://github.com/shaka-project/shaka-player/commit/5f8e7fdd055b5ec09d7baff96138ee9b445c00ac))
+* Preload AES key when the key is available in EXT-X-SESSION-KEY ([#6495](https://github.com/shaka-project/shaka-player/issues/6495)) ([57cb6ad](https://github.com/shaka-project/shaka-player/commit/57cb6ad595d75ae0b36b9bb1ed99f896941c72ba))
+
+
+### Bug Fixes
+
+* **DASH:** decrease memory preasure on manifest with SegmentReference by updating old initSegmentReference ([#6499](https://github.com/shaka-project/shaka-player/issues/6499)) ([2dd85e4](https://github.com/shaka-project/shaka-player/commit/2dd85e4e23773bd4ca353f38706066fc0415d231))
+* **DASH:** Fix get partial current position for LL when using SegmentTemplate@duration ([#6516](https://github.com/shaka-project/shaka-player/issues/6516)) ([6c47f8b](https://github.com/shaka-project/shaka-player/commit/6c47f8be65d19f4539dd1807f62822ab7258aab4))
+* **DASH:** Fix unescape UTCTiming uris ([#6501](https://github.com/shaka-project/shaka-player/issues/6501)) ([27109fe](https://github.com/shaka-project/shaka-player/commit/27109feafac652348949bbea05e0a2a91bbb734b))
+* Fix deprecation warning for manifestPreprocessor that is always logged ([#6496](https://github.com/shaka-project/shaka-player/issues/6496)) ([0873d1e](https://github.com/shaka-project/shaka-player/commit/0873d1ecdd94d3a9b5562c29445c3c52e180d76d))
+* Fix flac detection in Safari ([#6497](https://github.com/shaka-project/shaka-player/issues/6497)) ([0e00d65](https://github.com/shaka-project/shaka-player/commit/0e00d6551fbe60efefe3e47581aec25da6972511))
+* Fix inefficient buffering behavior with negative trick play rate ([#6489](https://github.com/shaka-project/shaka-player/issues/6489)) ([a57002b](https://github.com/shaka-project/shaka-player/commit/a57002b4869348c62fbd9da4cc898558e14a2449))
+* Fix init segment equality in Segment Prefetch ([#6537](https://github.com/shaka-project/shaka-player/issues/6537)) ([ce7cef4](https://github.com/shaka-project/shaka-player/commit/ce7cef4d00f63077f01e6c3f74dbf1ab3526be6b))
+* Fix seeking timeouts ([#6539](https://github.com/shaka-project/shaka-player/issues/6539)) ([fda3c8f](https://github.com/shaka-project/shaka-player/commit/fda3c8f7e7f3ae60bedac96fc7e0db2d7adf6a0d)), closes [#5202](https://github.com/shaka-project/shaka-player/issues/5202)
+* Fix tXml conversion to DOMElement ([#6538](https://github.com/shaka-project/shaka-player/issues/6538)) ([d494068](https://github.com/shaka-project/shaka-player/commit/d4940681dd40a88e3f89b6ba423a3456b4abd38e))
+* Handle non existing navigator.platform string ([#6517](https://github.com/shaka-project/shaka-player/issues/6517)) ([#6518](https://github.com/shaka-project/shaka-player/issues/6518)) ([f337e06](https://github.com/shaka-project/shaka-player/commit/f337e06bdab676048eb9d0aa5faf172a09d06a1c))
+* Make UITextDisplayer constructor backward compatible ([#6532](https://github.com/shaka-project/shaka-player/issues/6532)) ([d564be8](https://github.com/shaka-project/shaka-player/commit/d564be8e8903ca1e825303a1f3c1e8369b2a5297))
+* Remove preloaded segment when segment has network error ([#6515](https://github.com/shaka-project/shaka-player/issues/6515)) ([2f5062a](https://github.com/shaka-project/shaka-player/commit/2f5062a41724dad77bdf35591e9936657f4f1f25))
+* **UI:** Allow show same resolution with different video bandwidth ([#6536](https://github.com/shaka-project/shaka-player/issues/6536)) ([9fb9b26](https://github.com/shaka-project/shaka-player/commit/9fb9b26b94a85fea3244a4c6b63fc0f7b22adba3))
+
 ## [4.8.0](https://github.com/shaka-project/shaka-player/compare/v4.7.0...v4.8.0) (2024-04-26)
 
 
diff --git a/lib/player.js b/lib/player.js
index 8d21fcd66c6..e54c8f08dea 100644
--- a/lib/player.js
+++ b/lib/player.js
@@ -7185,7 +7185,7 @@ shaka.Player.TYPICAL_BUFFERING_THRESHOLD_ = 0.5;
  * @export
  */
 // eslint-disable-next-line no-useless-concat
-shaka.Player.version = 'v4.8.0' + '-uncompiled';  // x-release-please-version
+shaka.Player.version = 'v4.9.0' + '-uncompiled';  // x-release-please-version
 
 // Initialize the deprecation system using the version string we just set
 // on the player.
diff --git a/package-lock.json b/package-lock.json
index 5c966c39612..6d456b67ab1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "shaka-player",
-  "version": "4.8.0",
+  "version": "4.9.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "shaka-player",
-      "version": "4.8.0",
+      "version": "4.9.0",
       "license": "Apache-2.0",
       "dependencies": {
         "eme-encryption-scheme-polyfill": "^2.1.1"
diff --git a/package.json b/package.json
index 96ede9a9e38..36cd3f05264 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "shaka-player",
   "description": "DASH/EME video player library",
-  "version": "4.8.0",
+  "version": "4.9.0",
   "homepage": "https://github.com/shaka-project/shaka-player",
   "author": "Google",
   "maintainers": [