diff --git a/CHANGELOG.md b/CHANGELOG.md
index 78fcb0dd8..ea6f8ebcc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@ Important changes to data models, configuration, and migrations between each
 AppEngine version, listed here to ease deployment and troubleshooting.
 
 ## Next Release (replace with git tag when deployed)
+ * Bump runtimeVersion to `2025.08.05`.
+ * Upgraded stable Dart analysis SDK to `3.8.3`
+ * Upgraded stable Flutter analysis SDK to `3.32.8`.
 
 ## `20250804t140400-all`
  * Bump runtimeVersion to `2025.07.14`.
diff --git a/Dockerfile.worker b/Dockerfile.worker
index 09b602e5c..c782cb1b2 100644
--- a/Dockerfile.worker
+++ b/Dockerfile.worker
@@ -23,10 +23,10 @@ RUN mkdir -p /home/worker/config/dart-stable
 RUN mkdir -p /home/worker/config/flutter-stable
 
 # Setup Dart SDK into /home/worker/dart/{stable,preview}/
-RUN XDG_CONFIG_HOME=/home/worker/config/dart-stable tool/setup-dart.sh /home/worker/dart/stable 3.8.1
+RUN XDG_CONFIG_HOME=/home/worker/config/dart-stable tool/setup-dart.sh /home/worker/dart/stable 3.8.3
 
 # Setup Flutter SDK into /home/worker/flutter/{stable,preview}/
-RUN XDG_CONFIG_HOME=/home/worker/config/flutter-stable tool/setup-flutter.sh /home/worker/flutter/stable 3.32.4
+RUN XDG_CONFIG_HOME=/home/worker/config/flutter-stable tool/setup-flutter.sh /home/worker/flutter/stable 3.32.8
 
 # Setup webp
 RUN tool/setup-webp.sh /home/worker/bin
diff --git a/app/lib/shared/versions.dart b/app/lib/shared/versions.dart
index 0da265a3f..ad38a8133 100644
--- a/app/lib/shared/versions.dart
+++ b/app/lib/shared/versions.dart
@@ -24,10 +24,10 @@ final RegExp runtimeVersionPattern = RegExp(r'^\d{4}\.\d{2}\.\d{2}$');
 /// when the version switch happens.
 const _acceptedRuntimeVersions = <String>[
   // The current [runtimeVersion].
-  '2025.07.14',
+  '2025.08.05',
   // Fallback runtime versions.
+  '2025.07.14',
   '2025.07.04',
-  '2025.07.01',
 ];
 
 /// Sets the current runtime versions.
@@ -62,8 +62,8 @@ bool shouldGCVersion(String version) =>
 
 // keep in-sync with SDK version in .mono_repo.yml and Dockerfile
 final String runtimeSdkVersion = '3.8.0';
-final String toolStableDartSdkVersion = '3.8.1';
-final String toolStableFlutterSdkVersion = '3.32.4';
+final String toolStableDartSdkVersion = '3.8.3';
+final String toolStableFlutterSdkVersion = '3.32.8';
 
 final semanticToolStableDartSdkVersion =
     Version.parse(toolStableDartSdkVersion);