diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0ff62e50..722d6bdf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,38 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## 2025-04-24
+
+### Changes
+
+---
+
+Packages with breaking changes:
+
+ - There are no breaking changes in this release.
+
+Packages with other changes:
+
+ - [`powersync_core` - `v1.2.4`](#powersync_core---v124)
+ - [`powersync_attachments_helper` - `v0.6.18+6`](#powersync_attachments_helper---v06186)
+ - [`powersync_sqlcipher` - `v0.1.5+4`](#powersync_sqlcipher---v0154)
+ - [`powersync` - `v1.12.4`](#powersync---v1124)
+
+Packages with dependency updates only:
+
+> Packages listed below depend on other packages in this workspace that have had changes. Their versions have been incremented to bump the minimum dependency versions of the packages they depend upon in this project.
+
+ - `powersync_attachments_helper` - `v0.6.18+6`
+ - `powersync_sqlcipher` - `v0.1.5+4`
+ - `powersync` - `v1.12.4`
+
+---
+
+#### `powersync_core` - `v1.2.4`
+
+ - Fix deadlock when `connect()` is called immediately after opening a database.
+
+
 ## 2025-04-22
 
 ### Changes
diff --git a/demos/benchmarks/pubspec.yaml b/demos/benchmarks/pubspec.yaml
index fae52ce9..4535d7f9 100644
--- a/demos/benchmarks/pubspec.yaml
+++ b/demos/benchmarks/pubspec.yaml
@@ -10,7 +10,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  powersync: ^1.12.3
+  powersync: ^1.12.4
   path_provider: ^2.1.1
   path: ^1.8.3
   logging: ^1.2.0
diff --git a/demos/django-todolist/pubspec.yaml b/demos/django-todolist/pubspec.yaml
index 2acd645c..4172c535 100644
--- a/demos/django-todolist/pubspec.yaml
+++ b/demos/django-todolist/pubspec.yaml
@@ -10,7 +10,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  powersync: ^1.12.3
+  powersync: ^1.12.4
   path_provider: ^2.1.1
   path: ^1.8.3
   logging: ^1.2.0
diff --git a/demos/firebase-nodejs-todolist/pubspec.yaml b/demos/firebase-nodejs-todolist/pubspec.yaml
index 87afcf14..143f3db0 100644
--- a/demos/firebase-nodejs-todolist/pubspec.yaml
+++ b/demos/firebase-nodejs-todolist/pubspec.yaml
@@ -11,7 +11,7 @@ dependencies:
   flutter:
     sdk: flutter
 
-  powersync: ^1.12.3
+  powersync: ^1.12.4
   path_provider: ^2.1.1
   supabase_flutter: ^2.0.1
   path: ^1.8.3
diff --git a/demos/supabase-anonymous-auth/pubspec.yaml b/demos/supabase-anonymous-auth/pubspec.yaml
index 1b1e625d..61670449 100644
--- a/demos/supabase-anonymous-auth/pubspec.yaml
+++ b/demos/supabase-anonymous-auth/pubspec.yaml
@@ -11,7 +11,7 @@ dependencies:
   flutter:
     sdk: flutter
 
-  powersync: ^1.12.3
+  powersync: ^1.12.4
   path_provider: ^2.1.1
   supabase_flutter: ^2.0.2
   path: ^1.8.3
diff --git a/demos/supabase-edge-function-auth/pubspec.yaml b/demos/supabase-edge-function-auth/pubspec.yaml
index 39d3405f..758092f8 100644
--- a/demos/supabase-edge-function-auth/pubspec.yaml
+++ b/demos/supabase-edge-function-auth/pubspec.yaml
@@ -11,7 +11,7 @@ dependencies:
   flutter:
     sdk: flutter
 
-  powersync: ^1.12.3
+  powersync: ^1.12.4
   path_provider: ^2.1.1
   supabase_flutter: ^2.0.2
   path: ^1.8.3
diff --git a/demos/supabase-simple-chat/pubspec.yaml b/demos/supabase-simple-chat/pubspec.yaml
index 0484c13b..edcf11bd 100644
--- a/demos/supabase-simple-chat/pubspec.yaml
+++ b/demos/supabase-simple-chat/pubspec.yaml
@@ -37,7 +37,7 @@ dependencies:
 
   supabase_flutter: ^2.0.2
   timeago: ^3.6.0
-  powersync: ^1.12.3
+  powersync: ^1.12.4
   path_provider: ^2.1.1
   path: ^1.8.3
   logging: ^1.2.0
diff --git a/demos/supabase-todolist-drift/pubspec.yaml b/demos/supabase-todolist-drift/pubspec.yaml
index b47b4cfe..726869b8 100644
--- a/demos/supabase-todolist-drift/pubspec.yaml
+++ b/demos/supabase-todolist-drift/pubspec.yaml
@@ -9,8 +9,8 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  powersync_attachments_helper: ^0.6.18+5
-  powersync: ^1.12.3
+  powersync_attachments_helper: ^0.6.18+6
+  powersync: ^1.12.4
   path_provider: ^2.1.1
   supabase_flutter: ^2.0.1
   path: ^1.8.3
diff --git a/demos/supabase-todolist-optional-sync/pubspec.yaml b/demos/supabase-todolist-optional-sync/pubspec.yaml
index a05c30bc..8f1edc9b 100644
--- a/demos/supabase-todolist-optional-sync/pubspec.yaml
+++ b/demos/supabase-todolist-optional-sync/pubspec.yaml
@@ -10,7 +10,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  powersync: ^1.12.3
+  powersync: ^1.12.4
   path_provider: ^2.1.1
   supabase_flutter: ^2.0.1
   path: ^1.8.3
diff --git a/demos/supabase-todolist/pubspec.yaml b/demos/supabase-todolist/pubspec.yaml
index 8db50147..2189ff3b 100644
--- a/demos/supabase-todolist/pubspec.yaml
+++ b/demos/supabase-todolist/pubspec.yaml
@@ -10,8 +10,8 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  powersync_attachments_helper: ^0.6.18+5
-  powersync: ^1.12.3
+  powersync_attachments_helper: ^0.6.18+6
+  powersync: ^1.12.4
   path_provider: ^2.1.1
   supabase_flutter: ^2.0.1
   path: ^1.8.3
diff --git a/demos/supabase-trello/pubspec.yaml b/demos/supabase-trello/pubspec.yaml
index 0509ba66..9e1d9b70 100644
--- a/demos/supabase-trello/pubspec.yaml
+++ b/demos/supabase-trello/pubspec.yaml
@@ -36,7 +36,7 @@ dependencies:
   random_name_generator: ^1.5.0
   flutter_dotenv: ^5.2.1
   logging: ^1.3.0
-  powersync: ^1.12.3
+  powersync: ^1.12.4
   sqlite_async: ^0.11.0
   path_provider: ^2.1.5
   supabase_flutter: ^2.8.3
diff --git a/packages/powersync/CHANGELOG.md b/packages/powersync/CHANGELOG.md
index 5718fc31..78a80687 100644
--- a/packages/powersync/CHANGELOG.md
+++ b/packages/powersync/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.12.4
+
+ - Update a dependency to the latest release.
+
 ## 1.12.3
 
 This updates `powersync_core` to version `1.2.3`, which includes these changes:
diff --git a/packages/powersync/pubspec.yaml b/packages/powersync/pubspec.yaml
index eb7483d0..78ac7c46 100644
--- a/packages/powersync/pubspec.yaml
+++ b/packages/powersync/pubspec.yaml
@@ -1,5 +1,5 @@
 name: powersync
-version: 1.12.3
+version: 1.12.4
 homepage: https://powersync.com
 repository: https://github.com/powersync-ja/powersync.dart
 description: PowerSync Flutter SDK. Sync Postgres, MongoDB or MySQL with SQLite in your Flutter app
@@ -12,7 +12,7 @@ dependencies:
     sdk: flutter
 
   sqlite3_flutter_libs: ^0.5.23
-  powersync_core: ^1.2.3
+  powersync_core: ^1.2.4
   powersync_flutter_libs: ^0.4.7
   collection: ^1.17.0
 
diff --git a/packages/powersync_attachments_helper/CHANGELOG.md b/packages/powersync_attachments_helper/CHANGELOG.md
index f6c20409..e37d73c6 100644
--- a/packages/powersync_attachments_helper/CHANGELOG.md
+++ b/packages/powersync_attachments_helper/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.6.18+6
+
+ - Update a dependency to the latest release.
+
 ## 0.6.18+5
 
  - Update a dependency to the latest release.
diff --git a/packages/powersync_attachments_helper/pubspec.yaml b/packages/powersync_attachments_helper/pubspec.yaml
index fb7bf6c0..3c7061e0 100644
--- a/packages/powersync_attachments_helper/pubspec.yaml
+++ b/packages/powersync_attachments_helper/pubspec.yaml
@@ -1,6 +1,6 @@
 name: powersync_attachments_helper
 description: A helper library for handling attachments when using PowerSync.
-version: 0.6.18+5
+version: 0.6.18+6
 repository: https://github.com/powersync-ja/powersync.dart
 homepage: https://www.powersync.com/
 environment:
@@ -10,7 +10,7 @@ dependencies:
   flutter:
     sdk: flutter
 
-  powersync_core: ^1.2.3
+  powersync_core: ^1.2.4
   logging: ^1.2.0
   sqlite_async: ^0.11.0
   path_provider: ^2.0.13
diff --git a/packages/powersync_core/CHANGELOG.md b/packages/powersync_core/CHANGELOG.md
index 0b29ac1a..2169e679 100644
--- a/packages/powersync_core/CHANGELOG.md
+++ b/packages/powersync_core/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.2.4
+
+ - Fix deadlock when `connect()` is called immediately after opening a database.
+
 ## 1.2.3
 
  - Introduce locks to avoid duplicate sync streams when multiple instances of the same database are opened.
diff --git a/packages/powersync_core/lib/src/database/native/native_powersync_database.dart b/packages/powersync_core/lib/src/database/native/native_powersync_database.dart
index bdd025c2..d235116a 100644
--- a/packages/powersync_core/lib/src/database/native/native_powersync_database.dart
+++ b/packages/powersync_core/lib/src/database/native/native_powersync_database.dart
@@ -122,7 +122,6 @@ class PowerSyncDatabaseImpl
     required AbortController abort,
     Map<String, dynamic>? params,
   }) async {
-    await initialize();
     final dbRef = database.isolateConnectionFactory();
 
     bool triedSpawningIsolate = false;
diff --git a/packages/powersync_core/lib/src/database/powersync_db_mixin.dart b/packages/powersync_core/lib/src/database/powersync_db_mixin.dart
index 164029ad..94a90074 100644
--- a/packages/powersync_core/lib/src/database/powersync_db_mixin.dart
+++ b/packages/powersync_core/lib/src/database/powersync_db_mixin.dart
@@ -264,6 +264,11 @@ mixin PowerSyncDatabaseMixin implements SqliteConnection {
     Duration crudThrottleTime = const Duration(milliseconds: 10),
     Map<String, dynamic>? params,
   }) async {
+    // The initialization process acquires a sync connect lock (through
+    // updateSchema), so ensure the database is ready before we try to acquire
+    // the lock for the connection.
+    await initialize();
+
     clientParams = params;
     var thisConnectAborter = AbortController();
 
diff --git a/packages/powersync_core/lib/src/database/web/web_powersync_database.dart b/packages/powersync_core/lib/src/database/web/web_powersync_database.dart
index 18b88d40..6505e45e 100644
--- a/packages/powersync_core/lib/src/database/web/web_powersync_database.dart
+++ b/packages/powersync_core/lib/src/database/web/web_powersync_database.dart
@@ -118,8 +118,6 @@ class PowerSyncDatabaseImpl
     required AbortController abort,
     Map<String, dynamic>? params,
   }) async {
-    await initialize();
-
     final crudStream =
         database.onChange(['ps_crud'], throttle: crudThrottleTime);
 
diff --git a/packages/powersync_core/lib/src/version.dart b/packages/powersync_core/lib/src/version.dart
index 21466264..2f7634fb 100644
--- a/packages/powersync_core/lib/src/version.dart
+++ b/packages/powersync_core/lib/src/version.dart
@@ -1 +1 @@
-const String libraryVersion = '1.2.3';
+const String libraryVersion = '1.2.4';
diff --git a/packages/powersync_core/pubspec.yaml b/packages/powersync_core/pubspec.yaml
index 506576e6..7fad42ce 100644
--- a/packages/powersync_core/pubspec.yaml
+++ b/packages/powersync_core/pubspec.yaml
@@ -1,5 +1,5 @@
 name: powersync_core
-version: 1.2.3
+version: 1.2.4
 homepage: https://powersync.com
 repository: https://github.com/powersync-ja/powersync.dart
 description: PowerSync Dart SDK - sync engine for building local-first apps.
diff --git a/packages/powersync_core/test/streaming_sync_test.dart b/packages/powersync_core/test/streaming_sync_test.dart
index b509c5f5..7b6974ee 100644
--- a/packages/powersync_core/test/streaming_sync_test.dart
+++ b/packages/powersync_core/test/streaming_sync_test.dart
@@ -61,6 +61,25 @@ void main() {
       server.close();
     });
 
+    test('can connect as initial operation', () async {
+      final server = await createServer();
+      final ignoreLogger = Logger.detached('powersync.test');
+
+      final pdb = await testUtils.setupPowerSync(
+          path: path, logger: ignoreLogger, initialize: false);
+      pdb.retryDelay = Duration(milliseconds: 5000);
+
+      await pdb.connect(connector: TestConnector(() async {
+        return PowerSyncCredentials(endpoint: server.endpoint, token: 'token');
+      }));
+
+      await expectLater(
+        pdb.statusStream,
+        emitsThrough(
+            isA<SyncStatus>().having((e) => e.connected, 'connected', isTrue)),
+      );
+    });
+
     test('full powersync reconnect', () async {
       // Test repeatedly creating new PowerSync connections, then disconnect
       // and close the connection.
diff --git a/packages/powersync_core/test/utils/abstract_test_utils.dart b/packages/powersync_core/test/utils/abstract_test_utils.dart
index 4b8e0933..33afec17 100644
--- a/packages/powersync_core/test/utils/abstract_test_utils.dart
+++ b/packages/powersync_core/test/utils/abstract_test_utils.dart
@@ -94,12 +94,18 @@ abstract class AbstractTestUtils {
       SqliteOptions options = const SqliteOptions.defaults()});
 
   /// Creates a SqliteDatabaseConnection
-  Future<PowerSyncDatabase> setupPowerSync(
-      {String? path, Schema? schema, Logger? logger}) async {
+  Future<PowerSyncDatabase> setupPowerSync({
+    String? path,
+    Schema? schema,
+    Logger? logger,
+    bool initialize = true,
+  }) async {
     final db = PowerSyncDatabase.withFactory(await testFactory(path: path),
         schema: schema ?? defaultSchema,
         logger: logger ?? _makeTestLogger(name: _testName));
-    await db.initialize();
+    if (initialize) {
+      await db.initialize();
+    }
     addTearDown(db.close);
     return db;
   }
diff --git a/packages/powersync_core/test/utils/web_test_utils.dart b/packages/powersync_core/test/utils/web_test_utils.dart
index d22c7199..890cea38 100644
--- a/packages/powersync_core/test/utils/web_test_utils.dart
+++ b/packages/powersync_core/test/utils/web_test_utils.dart
@@ -76,9 +76,13 @@ class TestUtils extends AbstractTestUtils {
 
   @override
   Future<PowerSyncDatabase> setupPowerSync(
-      {String? path, Schema? schema, Logger? logger}) async {
+      {String? path,
+      Schema? schema,
+      Logger? logger,
+      bool initialize = true}) async {
     await _isInitialized;
-    return super.setupPowerSync(path: path, schema: schema, logger: logger);
+    return super.setupPowerSync(
+        path: path, schema: schema, logger: logger, initialize: initialize);
   }
 
   @override
diff --git a/packages/powersync_sqlcipher/CHANGELOG.md b/packages/powersync_sqlcipher/CHANGELOG.md
index d1e33585..1636cbc8 100644
--- a/packages/powersync_sqlcipher/CHANGELOG.md
+++ b/packages/powersync_sqlcipher/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.1.5+4
+
+ - Update a dependency to the latest release.
+
 ## 0.1.5+3
 
 This updates `powersync_core` to version `1.2.3`, which includes these changes:
diff --git a/packages/powersync_sqlcipher/pubspec.yaml b/packages/powersync_sqlcipher/pubspec.yaml
index 598ac31b..b9335ce7 100644
--- a/packages/powersync_sqlcipher/pubspec.yaml
+++ b/packages/powersync_sqlcipher/pubspec.yaml
@@ -1,5 +1,5 @@
 name: powersync_sqlcipher
-version: 0.1.5+3
+version: 0.1.5+4
 homepage: https://powersync.com
 repository: https://github.com/powersync-ja/powersync.dart
 description: PowerSync Flutter SDK - sync engine for building local-first apps.
@@ -12,7 +12,7 @@ dependencies:
   flutter:
     sdk: flutter
 
-  powersync_core: ^1.2.3
+  powersync_core: ^1.2.4
   powersync_flutter_libs: ^0.4.7
   sqlcipher_flutter_libs: ^0.6.4
   sqlite3_web: ^0.3.0