diff --git a/dev-doc/updating-c-library.md b/dev-doc/updating-c-library.md
index 5cf899dd..5b0cd677 100644
--- a/dev-doc/updating-c-library.md
+++ b/dev-doc/updating-c-library.md
@@ -20,7 +20,7 @@ Update `flutter_libs` and `sync_flutter_libs` with **compatible library versions
   ```
 - Swift (iOS/macOS) ([view releases](https://github.com/objectbox/objectbox-swift/releases))
   ```
-  ./tool/set-swift-version.sh 1.8.0
+  ./tool/set-swift-version.sh 1.9.0
   ```
 
 ## Dart bindings
diff --git a/flutter_libs/ios/objectbox_flutter_libs.podspec b/flutter_libs/ios/objectbox_flutter_libs.podspec
index d907032f..14121e04 100644
--- a/flutter_libs/ios/objectbox_flutter_libs.podspec
+++ b/flutter_libs/ios/objectbox_flutter_libs.podspec
@@ -14,7 +14,7 @@ Pod::Spec.new do |s|
   s.source_files     = 'Classes/**/*'
 
   s.dependency 'Flutter'
-  s.dependency 'ObjectBox', '1.8.1'
+  s.dependency 'ObjectBox', '1.9.0'
 
   # Flutter.framework does not contain a i386 slice.
   s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386' }
diff --git a/flutter_libs/macos/objectbox_flutter_libs.podspec b/flutter_libs/macos/objectbox_flutter_libs.podspec
index c63f5392..3334d6e5 100644
--- a/flutter_libs/macos/objectbox_flutter_libs.podspec
+++ b/flutter_libs/macos/objectbox_flutter_libs.podspec
@@ -14,7 +14,7 @@ Pod::Spec.new do |s|
   s.source_files     = 'Classes/**/*'
 
   s.dependency 'FlutterMacOS'
-  s.dependency 'ObjectBox', '1.8.1'
+  s.dependency 'ObjectBox', '1.9.0'
 
   s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES' }
   s.swift_version = '5.3'
diff --git a/objectbox/CHANGELOG.md b/objectbox/CHANGELOG.md
index ee704c14..58dedf8d 100644
--- a/objectbox/CHANGELOG.md
+++ b/objectbox/CHANGELOG.md
@@ -27,6 +27,7 @@
 * Update: [objectbox-c 0.19.0](https://github.com/objectbox/objectbox-c/releases/tag/v0.19.0).
   Notably now requires glibc 2.28 or higher (and GLIBCXX_3.4.25); e.g. at least **Debian Buster 10 
   (2019) or Ubuntu 20.04**.
+* Update: [objectbox-swift 1.9.0](https://github.com/objectbox/objectbox-swift/releases/tag/v1.9.0).
 * Update: [objectbox-android 3.7.0](https://github.com/objectbox/objectbox-java/releases/tag/V3.7.0).
   If you are [using Admin](https://docs.objectbox.io/data-browser#setup), make sure to update to 
   `io.objectbox:objectbox-android-objectbrowser:3.7.0`.
diff --git a/sync_flutter_libs/ios/objectbox_sync_flutter_libs.podspec b/sync_flutter_libs/ios/objectbox_sync_flutter_libs.podspec
index cebe21c2..b39d6809 100644
--- a/sync_flutter_libs/ios/objectbox_sync_flutter_libs.podspec
+++ b/sync_flutter_libs/ios/objectbox_sync_flutter_libs.podspec
@@ -14,7 +14,7 @@ Pod::Spec.new do |s|
   s.source_files     = 'Classes/**/*'
 
   s.dependency 'Flutter'
-  s.dependency 'ObjectBox', '1.8.1-sync'
+  s.dependency 'ObjectBox', '1.9.0-sync'
 
   # Flutter.framework does not contain a i386 slice.
   s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386' }
diff --git a/sync_flutter_libs/macos/objectbox_sync_flutter_libs.podspec b/sync_flutter_libs/macos/objectbox_sync_flutter_libs.podspec
index 047d92f4..527ff2d6 100644
--- a/sync_flutter_libs/macos/objectbox_sync_flutter_libs.podspec
+++ b/sync_flutter_libs/macos/objectbox_sync_flutter_libs.podspec
@@ -14,7 +14,7 @@ Pod::Spec.new do |s|
   s.source_files     = 'Classes/**/*'
 
   s.dependency 'FlutterMacOS'
-  s.dependency 'ObjectBox', '1.8.1-sync'
+  s.dependency 'ObjectBox', '1.9.0-sync'
 
   s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES' }
   s.swift_version = '5.3'