diff --git a/packages/dynamite/dynamite/lib/src/models/components.dart b/packages/dynamite/dynamite/lib/src/models/components.dart
index e995236a..ab168eb1 100644
--- a/packages/dynamite/dynamite/lib/src/models/components.dart
+++ b/packages/dynamite/dynamite/lib/src/models/components.dart
@@ -1,12 +1,14 @@
 import 'package:dynamite/src/models/schema.dart';
 import 'package:dynamite/src/models/security_scheme.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'components.g.dart';
 
 @JsonSerializable()
+@immutable
 class Components {
-  Components({
+  const Components({
     this.securitySchemes,
     this.schemas,
   });
diff --git a/packages/dynamite/dynamite/lib/src/models/discriminator.dart b/packages/dynamite/dynamite/lib/src/models/discriminator.dart
index 5968aeb6..f1bfe774 100644
--- a/packages/dynamite/dynamite/lib/src/models/discriminator.dart
+++ b/packages/dynamite/dynamite/lib/src/models/discriminator.dart
@@ -1,10 +1,12 @@
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'discriminator.g.dart';
 
 @JsonSerializable()
+@immutable
 class Discriminator {
-  Discriminator({
+  const Discriminator({
     required this.propertyName,
     this.mapping,
   });
diff --git a/packages/dynamite/dynamite/lib/src/models/header.dart b/packages/dynamite/dynamite/lib/src/models/header.dart
index 9bd47efa..9e8a21e8 100644
--- a/packages/dynamite/dynamite/lib/src/models/header.dart
+++ b/packages/dynamite/dynamite/lib/src/models/header.dart
@@ -1,11 +1,13 @@
 import 'package:dynamite/src/models/schema.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'header.g.dart';
 
 @JsonSerializable()
+@immutable
 class Header {
-  Header({
+  const Header({
     this.description,
     this.required,
     this.schema,
diff --git a/packages/dynamite/dynamite/lib/src/models/info.dart b/packages/dynamite/dynamite/lib/src/models/info.dart
index 59d2f97a..b648d6ba 100644
--- a/packages/dynamite/dynamite/lib/src/models/info.dart
+++ b/packages/dynamite/dynamite/lib/src/models/info.dart
@@ -1,11 +1,13 @@
 import 'package:dynamite/src/models/license.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'info.g.dart';
 
 @JsonSerializable()
+@immutable
 class Info {
-  Info({
+  const Info({
     required this.title,
     required this.version,
     required this.license,
diff --git a/packages/dynamite/dynamite/lib/src/models/license.dart b/packages/dynamite/dynamite/lib/src/models/license.dart
index 3bf19718..f1a158a3 100644
--- a/packages/dynamite/dynamite/lib/src/models/license.dart
+++ b/packages/dynamite/dynamite/lib/src/models/license.dart
@@ -1,10 +1,12 @@
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'license.g.dart';
 
 @JsonSerializable()
+@immutable
 class License {
-  License({
+  const License({
     required this.name,
     this.identifier,
     this.url,
diff --git a/packages/dynamite/dynamite/lib/src/models/media_type.dart b/packages/dynamite/dynamite/lib/src/models/media_type.dart
index 4172cbae..feebad58 100644
--- a/packages/dynamite/dynamite/lib/src/models/media_type.dart
+++ b/packages/dynamite/dynamite/lib/src/models/media_type.dart
@@ -1,11 +1,13 @@
 import 'package:dynamite/src/models/schema.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'media_type.g.dart';
 
 @JsonSerializable()
+@immutable
 class MediaType {
-  MediaType({
+  const MediaType({
     this.schema,
   });
 
diff --git a/packages/dynamite/dynamite/lib/src/models/open_api.dart b/packages/dynamite/dynamite/lib/src/models/open_api.dart
index 45101099..a58ac874 100644
--- a/packages/dynamite/dynamite/lib/src/models/open_api.dart
+++ b/packages/dynamite/dynamite/lib/src/models/open_api.dart
@@ -6,12 +6,14 @@ import 'package:dynamite/src/models/security_requirement.dart';
 import 'package:dynamite/src/models/server.dart';
 import 'package:dynamite/src/models/tag.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'open_api.g.dart';
 
 @JsonSerializable()
+@immutable
 class OpenAPI {
-  OpenAPI({
+  const OpenAPI({
     required this.version,
     required this.info,
     this.servers,
diff --git a/packages/dynamite/dynamite/lib/src/models/operation.dart b/packages/dynamite/dynamite/lib/src/models/operation.dart
index 765deb01..95f8c57b 100644
--- a/packages/dynamite/dynamite/lib/src/models/operation.dart
+++ b/packages/dynamite/dynamite/lib/src/models/operation.dart
@@ -4,12 +4,14 @@ import 'package:dynamite/src/models/response.dart';
 import 'package:dynamite/src/models/responses.dart';
 import 'package:dynamite/src/models/security_requirement.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'operation.g.dart';
 
 @JsonSerializable()
+@immutable
 class Operation {
-  Operation({
+  const Operation({
     this.operationId,
     this.summary,
     this.description,
diff --git a/packages/dynamite/dynamite/lib/src/models/parameter.dart b/packages/dynamite/dynamite/lib/src/models/parameter.dart
index 86dc7340..eec63e13 100644
--- a/packages/dynamite/dynamite/lib/src/models/parameter.dart
+++ b/packages/dynamite/dynamite/lib/src/models/parameter.dart
@@ -1,11 +1,13 @@
 import 'package:dynamite/src/models/schema.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'parameter.g.dart';
 
 @JsonSerializable()
+@immutable
 class Parameter {
-  Parameter({
+  const Parameter({
     required this.name,
     required this.in_,
     this.description,
diff --git a/packages/dynamite/dynamite/lib/src/models/path_item.dart b/packages/dynamite/dynamite/lib/src/models/path_item.dart
index 5d75e819..2d7d3fea 100644
--- a/packages/dynamite/dynamite/lib/src/models/path_item.dart
+++ b/packages/dynamite/dynamite/lib/src/models/path_item.dart
@@ -1,12 +1,14 @@
 import 'package:dynamite/src/models/operation.dart';
 import 'package:dynamite/src/models/parameter.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'path_item.g.dart';
 
 @JsonSerializable()
+@immutable
 class PathItem {
-  PathItem({
+  const PathItem({
     this.description,
     this.parameters,
     this.get,
diff --git a/packages/dynamite/dynamite/lib/src/models/request_body.dart b/packages/dynamite/dynamite/lib/src/models/request_body.dart
index 1fbe60eb..2aa631df 100644
--- a/packages/dynamite/dynamite/lib/src/models/request_body.dart
+++ b/packages/dynamite/dynamite/lib/src/models/request_body.dart
@@ -1,11 +1,13 @@
 import 'package:dynamite/src/models/media_type.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'request_body.g.dart';
 
 @JsonSerializable()
+@immutable
 class RequestBody {
-  RequestBody({
+  const RequestBody({
     this.description,
     this.content,
     this.required,
diff --git a/packages/dynamite/dynamite/lib/src/models/response.dart b/packages/dynamite/dynamite/lib/src/models/response.dart
index 693e35c9..c4e3764d 100644
--- a/packages/dynamite/dynamite/lib/src/models/response.dart
+++ b/packages/dynamite/dynamite/lib/src/models/response.dart
@@ -1,12 +1,14 @@
 import 'package:dynamite/src/models/header.dart';
 import 'package:dynamite/src/models/media_type.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'response.g.dart';
 
 @JsonSerializable()
+@immutable
 class Response {
-  Response({
+  const Response({
     required this.description,
     this.content,
     this.headers,
diff --git a/packages/dynamite/dynamite/lib/src/models/schema.dart b/packages/dynamite/dynamite/lib/src/models/schema.dart
index 1db56028..f168eeb9 100644
--- a/packages/dynamite/dynamite/lib/src/models/schema.dart
+++ b/packages/dynamite/dynamite/lib/src/models/schema.dart
@@ -1,11 +1,13 @@
 import 'package:dynamite/src/models/discriminator.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'schema.g.dart';
 
 @JsonSerializable()
+@immutable
 class Schema {
-  Schema({
+  const Schema({
     this.ref,
     this.oneOf,
     this.anyOf,
@@ -85,7 +87,9 @@ class Schema {
   bool get isContentString => type == 'string' && (contentMediaType?.isNotEmpty ?? false) && contentSchema != null;
 }
 
-class EmptySchema extends Schema {}
+class EmptySchema extends Schema {
+  const EmptySchema();
+}
 
 Schema? _parseAdditionalProperties(final dynamic data) {
   if (data == null) {
@@ -93,7 +97,7 @@ Schema? _parseAdditionalProperties(final dynamic data) {
   }
 
   if (data is bool) {
-    return data ? EmptySchema() : null;
+    return data ? const EmptySchema() : null;
   }
 
   if (data is Map<String, dynamic>) {
diff --git a/packages/dynamite/dynamite/lib/src/models/security_scheme.dart b/packages/dynamite/dynamite/lib/src/models/security_scheme.dart
index df8b4417..90936fc9 100644
--- a/packages/dynamite/dynamite/lib/src/models/security_scheme.dart
+++ b/packages/dynamite/dynamite/lib/src/models/security_scheme.dart
@@ -1,10 +1,12 @@
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'security_scheme.g.dart';
 
 @JsonSerializable()
+@immutable
 class SecurityScheme {
-  SecurityScheme({
+  const SecurityScheme({
     required this.type,
     this.description,
     this.scheme,
diff --git a/packages/dynamite/dynamite/lib/src/models/server.dart b/packages/dynamite/dynamite/lib/src/models/server.dart
index 7feeac49..0a3f7270 100644
--- a/packages/dynamite/dynamite/lib/src/models/server.dart
+++ b/packages/dynamite/dynamite/lib/src/models/server.dart
@@ -1,11 +1,13 @@
 import 'package:dynamite/src/models/server_variable.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'server.g.dart';
 
 @JsonSerializable()
+@immutable
 class Server {
-  Server({
+  const Server({
     required this.url,
     this.variables,
   });
diff --git a/packages/dynamite/dynamite/lib/src/models/server_variable.dart b/packages/dynamite/dynamite/lib/src/models/server_variable.dart
index 52788812..3be2f869 100644
--- a/packages/dynamite/dynamite/lib/src/models/server_variable.dart
+++ b/packages/dynamite/dynamite/lib/src/models/server_variable.dart
@@ -1,10 +1,12 @@
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'server_variable.g.dart';
 
 @JsonSerializable()
+@immutable
 class ServerVariable {
-  ServerVariable({
+  const ServerVariable({
     required this.default_,
     this.enum_,
     this.description,
diff --git a/packages/dynamite/dynamite/lib/src/models/tag.dart b/packages/dynamite/dynamite/lib/src/models/tag.dart
index 3ade793a..7943a1b2 100644
--- a/packages/dynamite/dynamite/lib/src/models/tag.dart
+++ b/packages/dynamite/dynamite/lib/src/models/tag.dart
@@ -1,10 +1,12 @@
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 
 part 'tag.g.dart';
 
 @JsonSerializable()
+@immutable
 class Tag {
-  Tag({
+  const Tag({
     required this.name,
     this.description,
   });