diff --git a/packages/react-native/ReactAndroid/hermes-engine/build.gradle.kts b/packages/react-native/ReactAndroid/hermes-engine/build.gradle.kts
index b261292d65db0e..272c411e9098a3 100644
--- a/packages/react-native/ReactAndroid/hermes-engine/build.gradle.kts
+++ b/packages/react-native/ReactAndroid/hermes-engine/build.gradle.kts
@@ -330,6 +330,11 @@ afterEvaluate {
   tasks.getByName("preBuild").dependsOn(prepareHeadersForPrefab)
 }
 
+tasks.withType<JavaCompile>().configureEach {
+    options.compilerArgs.add("-Xlint:deprecation,unchecked")
+    options.compilerArgs.add("-Werror")
+}
+
 /* Publishing Configuration */
 apply(from = "../publish.gradle")
 
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/AndroidManifest.xml b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/AndroidManifest.xml
deleted file mode 100644
index 8e8524c731f514..00000000000000
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/AndroidManifest.xml
+++ /dev/null
@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-          package="com.facebook.react.devsupport">
-  <application>
-    <!-- This activity will be removed for release builds -->
-    <activity android:name="com.facebook.react.devsupport.DevSettingsActivity"
-              android:exported="false"
-    />
-  </application>
-</manifest>