diff --git a/CHANGELOG-Unreleased.md b/CHANGELOG-Unreleased.md
index 7005d1784..dbbbd9d5b 100644
--- a/CHANGELOG-Unreleased.md
+++ b/CHANGELOG-Unreleased.md
@@ -20,6 +20,8 @@
 - [Android] Added linker flag for building with 16kB page alignment
 - [TS] make catchError visible to typescript
 - [LokiJS] Fixed `unsafeResetDatabase()` failing with "another operation is already in progress" when it's called while an autosave is in progress
+- [iOS] Fixed compilation on React Native 0.88, which removed `RCTCxxBridge`; JSI is installed through the bridge or the bridgeless proxy alike
+- [Android] Generate `BuildConfig` explicitly (AGP 9 no longer does for libraries) and stop applying the unused Kotlin plugin, which collides with AGP 9's built-in Kotlin support
 - [SQLite] [iOS] Database setup failures on the legacy (non-JSI) bridge (database cannot be opened, schema setup or migration fails) now reject the promise and reach `onSetUpError` instead of raising an `NSException` that crashes the app
 - [SQLite] [iOS] [Android] After a failed schema setup or migration on the legacy (non-JSI) bridge, operations queued during setup are rejected with the setup error and the driver stays connected, so the app can recover with `database.unsafeResetDatabase()` instead of every call hanging (iOS) or being rejected with "No driver with tag N available" (Android). The Node.js SQLite bridge (`sqlite-node`) behaves the same way
 
diff --git a/native/android/build.gradle b/native/android/build.gradle
index a45cfe0b6..5f723c3f9 100644
--- a/native/android/build.gradle
+++ b/native/android/build.gradle
@@ -7,18 +7,11 @@ buildscript {
     ext.getExtOrIntegerDefault = {name ->
         return rootProject.ext.has(name) ? rootProject.ext.get(name) : (project.properties['ReactNativeWatermelonDB_' + name]).toInteger()
     }
-
-    repositories {
-        mavenCentral()
-    }
-
-    dependencies {
-        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:${getExtOrDefault('kotlinVersion')}")
-    }
 }
 
+// The module has no Kotlin sources anymore, so the Kotlin Gradle plugin is not applied:
+// AGP 9 registers its own `kotlin` extension and fails when a plugin applies it again.
 apply plugin: 'com.android.library'
-apply plugin: 'kotlin-android'
 
 android {
     compileSdkVersion getExtOrIntegerDefault('compileSdkVersion')
@@ -32,12 +25,17 @@ android {
         versionCode 1
         versionName "1.0"
     }
+
+    // AGP 9 stops generating BuildConfig for library modules by default;
+    // the Java sources read BuildConfig.DEBUG
+    buildFeatures {
+        buildConfig true
+    }
 }
 
 dependencies {
     //noinspection GradleDynamicVersion
     implementation 'com.facebook.react:react-native:+'
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:${getExtOrDefault('kotlinVersion')}"
 }
 
 repositories {
diff --git a/native/android/gradle.properties b/native/android/gradle.properties
index 777558da3..c791b5661 100644
--- a/native/android/gradle.properties
+++ b/native/android/gradle.properties
@@ -1,4 +1,3 @@
-ReactNativeWatermelonDB_kotlinVersion=1.3.50
 ReactNativeWatermelonDB_compileSdkVersion=31
 ReactNativeWatermelonDB_buildToolsVersion=28.0.3
 ReactNativeWatermelonDB_targetSdkVersion=28
diff --git a/native/ios/WatermelonDB/JSIInstaller.h b/native/ios/WatermelonDB/JSIInstaller.h
index c1b7efb0f..858183e7a 100644
--- a/native/ios/WatermelonDB/JSIInstaller.h
+++ b/native/ios/WatermelonDB/JSIInstaller.h
@@ -1,13 +1,13 @@
 #pragma once
 
-#import <React/RCTBridge+Private.h>
+#import <React/RCTBridge.h>
 
 #ifdef __cplusplus
 extern "C"
 {
 #endif
 
-void installWatermelonJSI(RCTCxxBridge *bridge);
+void installWatermelonJSI(RCTBridge *bridge);
 void watermelondbProvideSyncJson(int id, NSData *json, NSError **errorPtr);
 
 #ifdef __cplusplus
diff --git a/native/ios/WatermelonDB/JSIInstaller.mm b/native/ios/WatermelonDB/JSIInstaller.mm
index d50824973..6694f77d9 100644
--- a/native/ios/WatermelonDB/JSIInstaller.mm
+++ b/native/ios/WatermelonDB/JSIInstaller.mm
@@ -1,7 +1,14 @@
 #import "JSIInstaller.h"
 #import "Database.h"
 
-extern "C" void installWatermelonJSI(RCTCxxBridge *bridge) {
+// React Native 0.88 removed RCTCxxBridge (and its declaration in RCTBridge+Private.h).
+// Both the legacy RCTCxxBridge and the bridgeless RCTBridgeProxy still respond to -runtime,
+// so the installer takes a plain RCTBridge and declares the selector itself.
+@interface RCTBridge (WatermelonJSIRuntime)
+- (void *)runtime;
+@end
+
+extern "C" void installWatermelonJSI(RCTBridge *bridge) {
     if (bridge.runtime == nullptr) {
         return;
     }
diff --git a/native/ios/WatermelonDB/objc/WMDatabaseBridge.m b/native/ios/WatermelonDB/objc/WMDatabaseBridge.m
index 353204139..ba4a6b367 100644
--- a/native/ios/WatermelonDB/objc/WMDatabaseBridge.m
+++ b/native/ios/WatermelonDB/objc/WMDatabaseBridge.m
@@ -206,7 +206,7 @@ + (BOOL) requiresMainQueueSetup
 
 RCT_EXPORT_BLOCKING_SYNCHRONOUS_METHOD(initializeJSI)
 {
-    __block RCTCxxBridge *bridge = (RCTCxxBridge *) _bridge;
+    __block RCTBridge *bridge = _bridge;
     dispatch_sync([self methodQueue], ^{
         installWatermelonJSI(bridge);
     });