diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 29ddf4d..8ba6bac 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -9,7 +9,7 @@ on:
   workflow_dispatch: {}
 
 env:
-  RUNTIME_VERSION: 8.2
+  RUNTIME_VERSION: 8.3
 
 jobs:
   publish_platform:
diff --git a/io.elementary.Sdk.json.in b/io.elementary.Sdk.json.in
index 4b44d8f..dce4f87 100644
--- a/io.elementary.Sdk.json.in
+++ b/io.elementary.Sdk.json.in
@@ -3,7 +3,7 @@
     "id": "io.elementary.Sdk",
     "id-platform": "io.elementary.Platform",
     "default-branch": "@branch@",
-    "runtime-version": "48",
+    "runtime-version": "49",
     "runtime": "org.gnome.Platform",
     "sdk": "org.gnome.Sdk",
     "sdk-extensions": [
@@ -20,7 +20,7 @@
         "org.freedesktop.Platform.VulkanLayer",
         "org.freedesktop.Platform.Timezones",
         "org.freedesktop.Platform.GStreamer",
-        "org.freedesktop.Platform.openh264"
+        "org.freedesktop.Platform.codecs-extra"
     ],
     "inherit-sdk-extensions": [
         "org.freedesktop.Sdk.Extension"
diff --git a/platform-data/data/platform.appdata.xml.in b/platform-data/data/platform.appdata.xml.in
index a832cf0..8073aca 100644
--- a/platform-data/data/platform.appdata.xml.in
+++ b/platform-data/data/platform.appdata.xml.in
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Copyright 2021-2024 elementary, Inc. <contact@elementary.io> -->
+<!-- Copyright 2021-2025 elementary, Inc. <contact@elementary.io> -->
 <component>
   <id>io.elementary.Platform</id>
   <metadata_license>CC0-1.0</metadata_license>
@@ -11,6 +11,15 @@
   </description>
 
   <releases>
+    <release version="8.3.0" date="2025-09-19" urgency="medium">
+      <description>
+        <p>Platform updates:</p>
+        <ul>
+          <li>Rebase on GNOME 49 runtime</li>
+        </ul>
+      </description>
+    </release>
+
     <release version="8.2.1" date="2025-06-06" urgency="medium">
       <description>
         <p>Platform updates:</p>