diff --git a/android/gradle.properties b/android/gradle.properties
deleted file mode 100644
index 3fe8768..0000000
--- a/android/gradle.properties
+++ /dev/null
@@ -1,5 +0,0 @@
-StepCounter_compileSdkVersion=36
-StepCounter_kotlinVersion=2.0.21
-StepCounter_targetSdkVersion=36
-StepCounter_minSdkVersion=24
-StepCounter_ndkVersion=27.1.12297006
diff --git a/example/android/app/build.gradle b/example/android/app/build.gradle
index 3444555..062d12d 100644
--- a/example/android/app/build.gradle
+++ b/example/android/app/build.gradle
@@ -1,5 +1,12 @@
 apply plugin: "com.android.application"
-apply plugin: "org.jetbrains.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: "org.jetbrains.kotlin.android"
+}
+
 apply plugin: "com.facebook.react"
 
 /**