diff --git a/pkgs/unified_analytics/CHANGELOG.md b/pkgs/unified_analytics/CHANGELOG.md
index dbdbb39cf..19a91ef7a 100644
--- a/pkgs/unified_analytics/CHANGELOG.md
+++ b/pkgs/unified_analytics/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 5.8.3
+
+- [Fix bug](https://github.com/flutter/flutter/issues/143792) when parsing session json file
+
 ## 5.8.2
 
 - Added new event `Event.analyticsException` to track internal errors for this package
diff --git a/pkgs/unified_analytics/lib/src/constants.dart b/pkgs/unified_analytics/lib/src/constants.dart
index cc7137997..04b749aaf 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 = '5.8.2';
+const String kPackageVersion = '5.8.3';
 
 /// The minimum length for a session.
 const int kSessionDurationMinutes = 30;
diff --git a/pkgs/unified_analytics/lib/src/session.dart b/pkgs/unified_analytics/lib/src/session.dart
index 77640d68a..de4999b07 100644
--- a/pkgs/unified_analytics/lib/src/session.dart
+++ b/pkgs/unified_analytics/lib/src/session.dart
@@ -105,7 +105,10 @@ class Session {
         description: 'message: ${err.message}\nsource: ${err.source}',
       ));
 
-      parseContents();
+      // Fallback to setting the session id as the current time
+      final now = clock.now();
+      _sessionId = now.millisecondsSinceEpoch;
+      _lastPing = now.millisecondsSinceEpoch;
     } on FileSystemException catch (err) {
       Initializer.createSessionFile(sessionFile: sessionFile);
 
@@ -115,7 +118,10 @@ class Session {
         description: err.osError?.toString(),
       ));
 
-      parseContents();
+      // Fallback to setting the session id as the current time
+      final now = clock.now();
+      _sessionId = now.millisecondsSinceEpoch;
+      _lastPing = now.millisecondsSinceEpoch;
     }
   }
 }
diff --git a/pkgs/unified_analytics/pubspec.yaml b/pkgs/unified_analytics/pubspec.yaml
index eace0d02f..1de690100 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: 5.8.2
+version: 5.8.3
 repository: https://github.com/dart-lang/tools/tree/main/pkgs/unified_analytics
 
 environment: