diff --git a/lib/src/pub_updater.dart b/lib/src/pub_updater.dart
index 89889bd..f89116a 100644
--- a/lib/src/pub_updater.dart
+++ b/lib/src/pub_updater.dart
@@ -13,7 +13,10 @@ class PackageInfoRequestFailure implements Exception {}
 class PackageInfoNotFoundFailure implements Exception {}
 
 /// The pub.dev base url for querying package versions
-const _defaultBaseUrl = 'https://pub.dev/api/packages/';
+const _defaultBaseUrl = 'https://pub.dev';
+
+/// The pub.dev api query path for querying packages
+const _pubPackagesPath = '/api/packages/';
 
 /// {@template pub_update}
 /// A Dart package which enables checking whether a package is up to date.
@@ -69,12 +72,18 @@ class PubUpdater {
         'activate',
         packageName,
         if (versionConstraint != null) versionConstraint,
+        if (_baseUrl != _defaultBaseUrl) ...[
+          '--hosted-url',
+          _baseUrl,
+          '--source',
+          'hosted'
+        ]
       ],
     );
   }
 
   Future<PackageInfo> _getPackageInfo(String packageName) async {
-    final uri = Uri.parse('$_baseUrl$packageName');
+    final uri = Uri.parse('$_baseUrl$_pubPackagesPath$packageName');
     final response = await _get(uri);
 
     if (response.statusCode != HttpStatus.ok) throw PackageInfoRequestFailure();
diff --git a/test/pub_update_test.dart b/test/pub_update_test.dart
index 8250aef..3b9b097 100644
--- a/test/pub_update_test.dart
+++ b/test/pub_update_test.dart
@@ -24,6 +24,17 @@ const command = [
   'activate',
   'very_good_cli',
 ];
+const commandWithCustomBaseUrl = [
+  'dart',
+  'pub',
+  'global',
+  'activate',
+  'very_good_cli',
+  '--hosted-url',
+  customBaseUrl,
+  '--source',
+  'hosted',
+];
 const commandWithConstraint = [
   'dart',
   'pub',
@@ -32,8 +43,20 @@ const commandWithConstraint = [
   'very_good_cli',
   '>=0.4.0',
 ];
+const commandWithConstraintAndCustomBaseUrl = [
+  'dart',
+  'pub',
+  'global',
+  'activate',
+  'very_good_cli',
+  '>=0.4.0',
+  '--hosted-url',
+  customBaseUrl,
+  '--source',
+  'hosted',
+];
 
-const customBaseUrl = 'https://custom-domain.com/api/packages/';
+const customBaseUrl = 'https://custom-domain.com';
 
 void main() {
   group('PubUpdater', () {
@@ -102,7 +125,7 @@ void main() {
 
         verify(
           () => client.get(
-            Uri.parse('${customBaseUrl}very_good_cli'),
+            Uri.parse('$customBaseUrl/api/packages/very_good_cli'),
           ),
         ).called(1);
       });
@@ -229,7 +252,7 @@ void main() {
 
         verify(
           () => client.get(
-            Uri.parse('${customBaseUrl}very_good_cli'),
+            Uri.parse('$customBaseUrl/api/packages/very_good_cli'),
           ),
         ).called(1);
       });
@@ -268,6 +291,14 @@ void main() {
         );
         verify(() => processManager.run(command)).called(1);
       });
+      test('makes correct call to process.run with customBaseUrl', () async {
+        pubUpdater = PubUpdater(client, customBaseUrl);
+        await pubUpdater.update(
+          packageName: 'very_good_cli',
+          processManager: processManager,
+        );
+        verify(() => processManager.run(commandWithCustomBaseUrl)).called(1);
+      });
 
       test('makes correct call to process.run with version constraint',
           () async {
@@ -278,6 +309,18 @@ void main() {
         );
         verify(() => processManager.run(commandWithConstraint)).called(1);
       });
+
+      test('makes correct call to process.run with version constraint',
+          () async {
+        pubUpdater = PubUpdater(client, customBaseUrl);
+        await pubUpdater.update(
+          packageName: 'very_good_cli',
+          processManager: processManager,
+          versionConstraint: '>=0.4.0',
+        );
+        verify(() => processManager.run(commandWithConstraintAndCustomBaseUrl))
+            .called(1);
+      });
     });
   });
 }