diff --git a/android/build.gradle b/android/build.gradle
index 0f9944e..090f527 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -19,7 +19,13 @@ def isNewArchitectureEnabled() {
 }
 
 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'
+}
 
 if (isNewArchitectureEnabled()) {
   apply plugin: 'com.facebook.react'