diff --git a/README.md b/README.md
index 65012e6..198c702 100644
--- a/README.md
+++ b/README.md
@@ -133,20 +133,30 @@ $ release_tools next_version 1.0.1+1
 # 1.1.0+2
 ```
 
-If you don't want this behavior, pass the `--freezeBuild` flag.
+If you don't want this behavior, pass the `--freeze-build` flag.
 
 ```sh
-$ release_tools next_version --freezeBuild 1.0.1+1
+$ release_tools next_version --freeze-build 1.0.1+1
 # 1.1.0+1
 ```
 
-To output just the version without the build number, pass the `--noBuild` flag.
+To output just the version without the build number, pass the `--no-build` flag.
 
 ```sh
-$ release_tools next_version --noBuild 1.0.1+1
+$ release_tools next_version --no-build 1.0.1+1
 # 1.1.0
 ```
 
+If you want to ensure that the next version is a major version and not a
+pre-release, use the `--ensure-major` flag.
+
+```sh
+$ release_tools next_version 0.2.3
+# 0.4.3
+$ release_tools next_version --ensure-major 0.2.3
+# 1.0.0
+```
+
 ### should_release
 
 The following will print 'yes' to stdout if there are releasable commits, or
diff --git a/lib/next_version_command.dart b/lib/next_version_command.dart
index e36b4ba..dd23443 100644
--- a/lib/next_version_command.dart
+++ b/lib/next_version_command.dart
@@ -38,7 +38,9 @@ class NextVersionCommand extends ReleaseToolsCommand
 release_tools next_version # will check version on pubspec.yaml
 release_tools next_version 2.0.1
 release_tools next_version --from=3682c64 2.0.1
-release_tools next_version --ensureMajor 0.2.5 # always version >= 1.0.0
+release_tools next_version --ensure-major 0.2.5 # always version >= 1.0.0
+release_tools next_version 2.1.3+24 # 2.1.4+25
+release_tools next_version --no-build 2.1.3+24 # 2.1.4
 ''',
   );
 
@@ -53,19 +55,22 @@ release_tools next_version --ensureMajor 0.2.5 # always version >= 1.0.0
 
   void incrementBuildFromOption() {
     argParser.addFlag(
-      'freezeBuild',
+      'freeze-build',
       abbr: 'b',
       help: 'Do not increment build number',
+      aliases: ['freezeBuild'],
     );
     argParser.addFlag(
-      'noBuild',
+      'no-build',
       abbr: 'n',
       help: 'Do not include build number in output',
+      aliases: ['noBuild'],
     );
     argParser.addFlag(
-      'ensureMajor',
+      'ensure-major',
       abbr: 'm',
       help: 'Ensure next version >= 1.0.0',
+      aliases: ['ensureMajor'],
     );
   }
 
@@ -73,13 +78,13 @@ release_tools next_version --ensureMajor 0.2.5 # always version >= 1.0.0
   Future<void> run() async {
     final currentVersion = await getVersionFromArgsOrPubspec();
     final args = ensureArgResults();
-    final incrementBuild = !(args['freezeBuild'] as bool);
+    final incrementBuild = !(args['freeze-build'] as bool);
     final theNextVersion = await getNextVersionFromString(
       await getCommits(),
       currentVersion,
       incrementBuild: incrementBuild,
-      noBuild: args['noBuild'] as bool,
-      ensureMajor: args['ensureMajor'] as bool,
+      noBuild: args['no-build'] as bool,
+      ensureMajor: args['ensure-major'] as bool,
     );
     printer.println(theNextVersion);
   }
diff --git a/test/next_version_command_test.dart b/test/next_version_command_test.dart
index e25c3cc..35cd480 100644
--- a/test/next_version_command_test.dart
+++ b/test/next_version_command_test.dart
@@ -209,13 +209,13 @@ void main() {
               }
               final args = [command];
               if (data.freezeBuild) {
-                args.add('--freezeBuild');
+                args.add('--freeze-build');
               }
               if (data.noBuild) {
-                args.add('--noBuild');
+                args.add('--no-build');
               }
               if (data.ensureMajor) {
-                args.add('--ensureMajor');
+                args.add('--ensure-major');
               }
               args.add(version);
               await runner.run(args);