diff --git a/pkgs/unified_analytics/CHANGELOG.md b/pkgs/unified_analytics/CHANGELOG.md
index d139d3e7b..b8ddee461 100644
--- a/pkgs/unified_analytics/CHANGELOG.md
+++ b/pkgs/unified_analytics/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 5.4.0
+
+- Added the `Event.codeSizeAnalysis` constructor
+
 ## 5.3.0
 
 - User property "host_os_version" added to provide detail version information about the host
diff --git a/pkgs/unified_analytics/lib/src/constants.dart b/pkgs/unified_analytics/lib/src/constants.dart
index 656565024..28a0e6506 100644
--- a/pkgs/unified_analytics/lib/src/constants.dart
+++ b/pkgs/unified_analytics/lib/src/constants.dart
@@ -82,7 +82,7 @@ const int kLogFileLength = 2500;
 const String kLogFileName = 'dart-flutter-telemetry.log';
 
 /// The current version of the package, should be in line with pubspec version.
-const String kPackageVersion = '5.3.0';
+const String kPackageVersion = '5.4.0';
 
 /// The minimum length for a session.
 const int kSessionDurationMinutes = 30;
diff --git a/pkgs/unified_analytics/lib/src/enums.dart b/pkgs/unified_analytics/lib/src/enums.dart
index 9a87d8785..18dc190cc 100644
--- a/pkgs/unified_analytics/lib/src/enums.dart
+++ b/pkgs/unified_analytics/lib/src/enums.dart
@@ -46,6 +46,11 @@ enum DashEvent {
 
   // Events for the Flutter CLI
 
+  codeSizeAnalysis(
+    label: 'code_size_analysis',
+    description: 'Indicates when the "--analyize-size" command is run',
+    toolOwner: DashTool.flutterTool,
+  ),
   doctorValidatorResult(
     label: 'doctor_validator_result',
     description: 'Results from a specific doctor validator',
diff --git a/pkgs/unified_analytics/lib/src/event.dart b/pkgs/unified_analytics/lib/src/event.dart
index 5edd8c458..06b445ece 100644
--- a/pkgs/unified_analytics/lib/src/event.dart
+++ b/pkgs/unified_analytics/lib/src/event.dart
@@ -110,6 +110,17 @@ final class Event {
           if (removed != null) 'removed': removed,
         };
 
+  /// An event that reports when the code size measurement is run
+  /// via `--analyze-size`.
+  ///
+  /// [platform] - string identifier for which platform was run "ios", "apk",
+  ///   "aab", etc.
+  Event.codeSizeAnalysis({required String platform})
+      : eventName = DashEvent.codeSizeAnalysis,
+        eventData = {
+          'platform': platform,
+        };
+
   /// Event that is emitted periodically to report the number of times a given
   /// command has been executed.
   ///
diff --git a/pkgs/unified_analytics/pubspec.yaml b/pkgs/unified_analytics/pubspec.yaml
index fc08e1d7c..6582fb33a 100644
--- a/pkgs/unified_analytics/pubspec.yaml
+++ b/pkgs/unified_analytics/pubspec.yaml
@@ -4,7 +4,7 @@ description: >-
   to Google Analytics.
 # When updating this, keep the version consistent with the changelog and the
 # value in lib/src/constants.dart.
-version: 5.3.0
+version: 5.4.0
 repository: https://github.com/dart-lang/tools/tree/main/pkgs/unified_analytics
 
 environment:
diff --git a/pkgs/unified_analytics/test/event_test.dart b/pkgs/unified_analytics/test/event_test.dart
index 0ce7b1ef9..9cb3488a7 100644
--- a/pkgs/unified_analytics/test/event_test.dart
+++ b/pkgs/unified_analytics/test/event_test.dart
@@ -398,6 +398,17 @@ void main() {
     expect(constructedEvent.eventData.length, 3);
   });
 
+  test('Event.codeSizeAnalysis constructed', () {
+    Event generateEvent() => Event.codeSizeAnalysis(platform: 'platform');
+
+    final constructedEvent = generateEvent();
+
+    expect(generateEvent, returnsNormally);
+    expect(constructedEvent.eventName, DashEvent.codeSizeAnalysis);
+    expect(constructedEvent.eventData['platform'], 'platform');
+    expect(constructedEvent.eventData.length, 1);
+  });
+
   test('Confirm all constructors were checked', () {
     var constructorCount = 0;
     for (var declaration in reflectClass(Event).declarations.keys) {
@@ -406,7 +417,7 @@ void main() {
 
     // Change this integer below if your PR either adds or removes
     // an Event constructor
-    final eventsAccountedForInTests = 20;
+    final eventsAccountedForInTests = 21;
     expect(eventsAccountedForInTests, constructorCount,
         reason: 'If you added or removed an event constructor, '
             'ensure you have updated '