diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2516bfb..7a8d21d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,3 +12,9 @@
 
 ## 1.1.0
 * Added `excludedCountryCodes` option to exclude specific countries from code execution
+
+## 1.2.0
+* Breaking Changes
+    Breaking: `borderBuilder` now accepts a `Widget` input instead of `Border`
+*  New Features
+    Added `excludedCountryCodes` from `PickCountryLookupService`
diff --git a/example/lib/main.dart b/example/lib/main.dart
index 74884ed..7c7e000 100644
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -25,7 +25,8 @@ class _HomePageState extends State<HomePage> {
   @override
   void initState() {
     super.initState();
-    selectedCountry = PickCountryLookupService().getCountryByIsoCode('LV');
+    selectedCountry = PickCountryLookupService(excludedCountryCodes: ["AX"])
+        .getCountryByCountryCode("358");
   }
 
   void _showCountryPicker() {
@@ -39,7 +40,7 @@ class _HomePageState extends State<HomePage> {
           hideSearch: true,
           backButton: Container(),
           selectedCountryIsoCode: selectedCountry?.iso2Code,
-          excludedCountryCodes: ['AX', 'US', 'MX'],
+          excludedCountryCodes: ["AX"],
           title: 'Select your country',
           searchField: Row(
             mainAxisAlignment: MainAxisAlignment.center,
@@ -74,12 +75,13 @@ class _HomePageState extends State<HomePage> {
               height: 20,
             );
           },
-          borderBuilder: (Country country) {
-            return Border.all(
+          borderBuilder: Container(
+            decoration: BoxDecoration(
+                border: Border.all(
               color: Colors.grey[400]!,
               width: 0.5,
-            );
-          },
+            )),
+          ),
           // selectedIcon: Icon(
           //   Icons.fingerprint_outlined,
           //   color: Colors.pink[200],
diff --git a/lib/src/services/pick_country_lookup_service.dart b/lib/src/services/pick_country_lookup_service.dart
index 16d5705..69f8a5f 100644
--- a/lib/src/services/pick_country_lookup_service.dart
+++ b/lib/src/services/pick_country_lookup_service.dart
@@ -4,8 +4,11 @@ import 'package:pick_country_picker/src/data/country_codes.dart';
 
 class PickCountryLookupService {
   final List<Country> _allCountries;
+  final List<String>? overrideCountryCodes;
 
-  PickCountryLookupService({List<String>? excludedCountryCodes})
+
+  PickCountryLookupService(
+      {this.overrideCountryCodes, List<String>? excludedCountryCodes})
       : _allCountries = countryCodes
             .map((code) => Country.fromJson(code))
             .where((country) =>
diff --git a/lib/src/widgets/country_list_widget.dart b/lib/src/widgets/country_list_widget.dart
index 6921050..4320dfb 100644
--- a/lib/src/widgets/country_list_widget.dart
+++ b/lib/src/widgets/country_list_widget.dart
@@ -9,7 +9,7 @@ class CountryListWidget extends StatelessWidget {
   final Widget? selectedIcon;
   final String Function(Country country)? countryDisplayBuilder;
   final String? Function(Country country)? subtitleBuilder;
-  final Border Function(Country country)? borderBuilder;
+  final Widget? borderBuilder;
 
   const CountryListWidget({
     super.key,
@@ -25,36 +25,32 @@ class CountryListWidget extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return ListView.builder(
+    return ListView.separated(
       itemCount: availableCountries.length,
+      separatorBuilder: (_, __) => borderBuilder ?? const SizedBox.shrink(),
       itemBuilder: (context, index) {
         final country = availableCountries[index];
         final isSelected = selectedCountry != null &&
             country.iso2Code == selectedCountry!.iso2Code;
 
-        return Container(
-          decoration: BoxDecoration(
-            border: borderBuilder != null ? borderBuilder!(country) : null,
-          ),
-          child: ListTile(
-            leading: flagBuilder != null
-                ? flagBuilder!(country)
-                : defaultFlagWidget(country),
-            title: Text(countryDisplayBuilder != null
-                ? countryDisplayBuilder!(country)
-                : defaultCountryDisplay(country)),
-            subtitle: subtitleBuilder != null
-                ? Text(subtitleBuilder!(country) ?? '')
-                : null,
-            trailing: isSelected
-                ? selectedIcon ??
-                    const Icon(
-                      Icons.check_circle,
-                      color: Colors.green,
-                    )
-                : null,
-            onTap: () => onCountrySelected(country),
-          ),
+        return ListTile(
+          leading: flagBuilder != null
+              ? flagBuilder!(country)
+              : defaultFlagWidget(country),
+          title: Text(countryDisplayBuilder != null
+              ? countryDisplayBuilder!(country)
+              : defaultCountryDisplay(country)),
+          subtitle: subtitleBuilder != null
+              ? Text(subtitleBuilder!(country) ?? '')
+              : null,
+          trailing: isSelected
+              ? selectedIcon ??
+                  const Icon(
+                    Icons.check_circle,
+                    color: Colors.green,
+                  )
+              : null,
+          onTap: () => onCountrySelected(country),
         );
       },
     );
diff --git a/lib/src/widgets/country_picker_modal.dart b/lib/src/widgets/country_picker_modal.dart
index 92dad13..9e5c6b7 100644
--- a/lib/src/widgets/country_picker_modal.dart
+++ b/lib/src/widgets/country_picker_modal.dart
@@ -92,33 +92,43 @@ class CountryPickerModal extends StatefulWidget {
   /// A callback function that allows for customized border rendering for each country
   /// item in the list. If provided, this function will be used to generate the border
   /// for each ListTile.
-  final Border Function(Country country)? borderBuilder;
-
-  const CountryPickerModal(
-      {super.key,
-      required this.onCountryChanged,
-      this.selectedCountry,
-      this.selectedCountryCode,
-      this.selectedCountryName,
-      this.selectedCountryIsoCode,
-      this.title = 'Select Country',
-      this.priorityCountryCodes,
-      this.overrideCountryCodes,
-      this.excludedCountryCodes,
-      this.hideSearch = false,
-      this.hideCloseIcon = false,
-      this.useCupertinoModal = false,
-      this.searchField,
-      this.backButton,
-      this.countryListItemBuilder,
-      this.selectedIcon,
-      this.countryDisplayBuilder,
-      this.flagBuilder,
-      this.borderRadius,
-      this.subtitleBuilder,
-      this.cancelText = 'Cancel',
-      this.placeholderText = 'Search for a country',
-      this.borderBuilder});
+  final Widget? borderBuilder;
+
+  CountryPickerModal({
+    super.key,
+    required this.onCountryChanged,
+    this.selectedCountry,
+    this.selectedCountryCode,
+    this.selectedCountryName,
+    this.selectedCountryIsoCode,
+    this.title = 'Select Country',
+    this.priorityCountryCodes,
+    this.overrideCountryCodes,
+    this.excludedCountryCodes,
+    this.hideSearch = false,
+    this.hideCloseIcon = false,
+    this.useCupertinoModal = false,
+    this.searchField,
+    this.backButton,
+    this.countryListItemBuilder,
+    this.selectedIcon,
+    this.countryDisplayBuilder,
+    this.flagBuilder,
+    this.borderRadius,
+    this.subtitleBuilder,
+    this.cancelText = 'Cancel',
+    this.placeholderText = 'Search for a country',
+    this.borderBuilder,
+  }) : assert(
+          overrideCountryCodes == null ||
+              excludedCountryCodes == null ||
+              overrideCountryCodes
+                  .toSet()
+                  .intersection(excludedCountryCodes.toSet())
+                  .isEmpty,
+          'overrideCountryCodes and excludedCountryCodes must not contain any of the same values.',
+        );
+
 
   @override
   CountryPickerModalState createState() => CountryPickerModalState();
diff --git a/pubspec.yaml b/pubspec.yaml
index 3ff0cd2..0178798 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: pick_country_picker
 description: A highly customizable Flutter package for selecting a country from a modal list.
-version: 1.1.0
+version: 1.2.0
 homepage:
 repository: https://github.com/ThickLine/pick_country_picker