diff --git a/.changeset/agp9-built-in-kotlin.md b/.changeset/agp9-built-in-kotlin.md
new file mode 100644
index 00000000..d629c79e
--- /dev/null
+++ b/.changeset/agp9-built-in-kotlin.md
@@ -0,0 +1,5 @@
+---
+'@livekit/react-native': patch
+---
+
+android: Fix build failure on Android Gradle Plugin 9+ for Expo 58+
diff --git a/android/build.gradle b/android/build.gradle
index 4d1faae3..a5002905 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -15,7 +15,13 @@ buildscript {
 }
 
 apply plugin: 'com.android.library'
-apply plugin: 'kotlin-android'
+// AGP 9 ships built-in Kotlin support and registers the `kotlin` extension
+// itself. Applying the Kotlin plugin on top of it fails configuration with
+// "Cannot add extension with name 'kotlin'". Only apply it when nothing has
+// registered that extension yet.
+if (project.extensions.findByName('kotlin') == null) {
+  apply plugin: 'kotlin-android'
+}
 
 def getExtOrDefault(name) {
   return rootProject.ext.has(name) ? rootProject.ext.get(name) : project.properties['LivekitReactNative_' + name]