diff --git a/CHANGELOG.md b/CHANGELOG.md
index 65d48a3..26ab982 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.5.14
+
+* Handle union types for array and map items schemas
+
 ## 0.5.13
 
 * Fix static analysis warning in generated files
diff --git a/lib/src/generators/schema.dart b/lib/src/generators/schema.dart
index faf9b86..63e6b16 100644
--- a/lib/src/generators/schema.dart
+++ b/lib/src/generators/schema.dart
@@ -529,7 +529,7 @@ class SchemaGenerator extends BaseGenerator {
               orElse: () => p,
             );
         var (c, nullable) = propHeader(p.defaultValue, p.description);
-        var itemType = p.items.toDartType();
+        var itemType = p.items.toDartType(unions: _unions);
         c += "List<$itemType> ${nullable ? '?' : ''} $name,\n\n";
         file.writeAsStringSync(c, mode: FileMode.append);
       },
@@ -657,21 +657,38 @@ class SchemaGenerator extends BaseGenerator {
       }
     }
 
-    // Check for unions in component schemas
-    for (final s in (spec.components?.schemas?.keys ?? <String>[])) {
-      spec.components?.schemas?[s]?.mapOrNull(
+    void recursiveSchemaSearch(Schema? schema) {
+      if (schema == null) {
+        return;
+      }
+      schema.mapOrNull(
         object: (o) {
           final props = o.properties;
           final propNames = props?.keys.toList() ?? <String>[];
+          checkAnyOf(o.anyOf);
           for (final pName in propNames) {
             o.properties![pName]?.mapOrNull(
-              object: (p) => checkAnyOf(p.anyOf),
+              object: (p) {
+                checkAnyOf(p.anyOf);
+                recursiveSchemaSearch(p);
+              },
+              array: (a) => recursiveSchemaSearch(
+                a.items.mapOrNull(object: (o) => o),
+              ),
+              map: (m) => recursiveSchemaSearch(
+                m.valueSchema?.mapOrNull(object: (o) => o),
+              ),
             );
           }
         },
       );
     }
 
+    // Check for unions in component schemas
+    for (final s in (spec.components?.schemas?.keys ?? <String>[])) {
+      recursiveSchemaSearch(spec.components?.schemas?[s]);
+    }
+
     // Check for unions in component responses
     for (final key in (spec.components?.responses?.keys ?? <String>[])) {
       final r = spec.components?.responses?[key];
@@ -692,7 +709,7 @@ class SchemaGenerator extends BaseGenerator {
       }
     }
 
-    // Check for unions in path rquests/responses
+    // Check for unions in path requests/responses
     for (final p in (spec.paths?.values ?? <PathItem>[])) {
       // Responses
       p.get?.responses?.forEach((_, r) {
diff --git a/lib/src/open_api/index.dart b/lib/src/open_api/index.dart
index 169409c..9d39bd4 100644
--- a/lib/src/open_api/index.dart
+++ b/lib/src/open_api/index.dart
@@ -3,6 +3,7 @@ library openapi_models;
 import 'dart:convert';
 import 'dart:io';
 import 'dart:isolate';
+import 'package:collection/collection.dart';
 import 'package:recase/recase.dart';
 import 'package:yaml/yaml.dart' as yaml;
 import 'package:path/path.dart' as p;
diff --git a/lib/src/open_api/schema.dart b/lib/src/open_api/schema.dart
index c86a48a..fca1fb5 100644
--- a/lib/src/open_api/schema.dart
+++ b/lib/src/open_api/schema.dart
@@ -281,10 +281,9 @@ class Schema with _$Schema {
       object: (s) {
         if (s.anyOf != null && unions != null) {
           final subSchemas = s.anyOf!.map((e) => e.toDartType()).toList();
+          final leq = ListEquality();
           for (final e in unions.entries) {
-            if (subSchemas.any((s) => !e.value.contains(s))) {
-              continue;
-            } else {
+            if (leq.equals(subSchemas, e.value)) {
               final type = e.key.pascalCase;
               if (s.nullable == true) {
                 return '$type?';
diff --git a/pubspec.yaml b/pubspec.yaml
index 7992826..7fbe650 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: openapi_spec
 description: OpenAPI Specification generator using native Dart code, as well as an all-in-one parser of existing specifications.
-version: 0.5.13
+version: 0.5.14
 maintainer: Taza Technology LLC
 repository: https://github.com/tazatechnology/openapi_spec
 issue_tracker: https://github.com/tazatechnology/openapi_spec/issues