diff --git a/CHANGELOG.md b/CHANGELOG.md
index cbbe463..0861e19 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 0.13.5
+
+* Allow `CommandRunner.argParser` and `Command.argParser` to be overridden in
+  strong mode.
+
 ## 0.13.4+2
 
 * Fix a minor documentation error.
diff --git a/lib/command_runner.dart b/lib/command_runner.dart
index 1e33965..21dfa32 100644
--- a/lib/command_runner.dart
+++ b/lib/command_runner.dart
@@ -67,7 +67,8 @@
   /// Global options should be registered with this parser; they'll end up
   /// available via [Command.globalResults]. Commands should be registered with
   /// [addCommand] rather than directly on the parser.
-  final argParser = new ArgParser();
+  ArgParser get argParser => _argParser;
+  final _argParser = new ArgParser();
 
   CommandRunner(this.executableName, this.description) {
     argParser.addFlag('help',
@@ -249,7 +250,8 @@
   /// the constructor); they'll end up available via [argResults]. Subcommands
   /// should be registered with [addSubcommand] rather than directly on the
   /// parser.
-  final argParser = new ArgParser();
+  ArgParser get argParser => _argParser;
+  final _argParser = new ArgParser();
 
   /// Generates a string displaying usage information for this command.
   ///
diff --git a/pubspec.yaml b/pubspec.yaml
index 4f5fb7f..e52bf29 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: args
-version: 0.13.4+2
+version: 0.13.5
 author: "Dart Team <misc@dartlang.org>"
 homepage: https://github.com/dart-lang/args
 description: >