diff --git a/packages/dynamite/dynamite/lib/src/openapi_builder.dart b/packages/dynamite/dynamite/lib/src/openapi_builder.dart
index 3eaad791..4788cac8 100644
--- a/packages/dynamite/dynamite/lib/src/openapi_builder.dart
+++ b/packages/dynamite/dynamite/lib/src/openapi_builder.dart
@@ -13,6 +13,7 @@ import 'package:dynamite/src/builder/state.dart';
 import 'package:dynamite/src/helpers/dart_helpers.dart';
 import 'package:dynamite/src/models/openapi.dart' as openapi;
 import 'package:dynamite/src/models/type_result.dart';
+import 'package:version/version.dart';
 
 class OpenAPIBuilder implements Builder {
   @override
@@ -44,9 +45,8 @@ class OpenAPIBuilder implements Builder {
         _ => throw StateError('Openapi specs can only be yaml or json.'),
       };
 
-      final supportedVersions = ['3.0.3', '3.1.0'];
-      if (!supportedVersions.contains(spec.version)) {
-        throw Exception('Only OpenAPI ${supportedVersions.join(', ')} are supported');
+      if (Version.parse(spec.version).major != 3) {
+        throw Exception('Only OpenAPI 3.0.0 and later are supported');
       }
 
       final state = State(spec.info.title);
diff --git a/packages/dynamite/dynamite/pubspec.yaml b/packages/dynamite/dynamite/pubspec.yaml
index 3d98048c..8f460503 100644
--- a/packages/dynamite/dynamite/pubspec.yaml
+++ b/packages/dynamite/dynamite/pubspec.yaml
@@ -15,6 +15,7 @@ dependencies:
   intersperse: ^2.0.0
   meta: ^1.9.1
   path: ^1.8.3
+  version: ^3.0.2
 
 dev_dependencies:
   build_runner: ^2.4.6