diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/FileIoHandler.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/FileIoHandler.java
index 50dff8ff548..bc938e2cc9c 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/FileIoHandler.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/FileIoHandler.java
@@ -12,6 +12,7 @@ import android.os.Looper;
 import android.util.Base64;
 import androidx.annotation.Nullable;
 import com.facebook.common.logging.FLog;
+import com.facebook.infer.annotation.Nullsafe;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
@@ -20,6 +21,7 @@ import java.util.Iterator;
 import java.util.Map;
 import org.json.JSONObject;
 
+@Nullsafe(Nullsafe.Mode.LOCAL)
 public class FileIoHandler implements Runnable {
   private static final String TAG = JSPackagerClient.class.getSimpleName();
   private static final long FILE_TTL = 30 * 1000;
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/NotificationOnlyHandler.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/NotificationOnlyHandler.java
index e7366fd2ddb..bbfe4400dd0 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/NotificationOnlyHandler.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/NotificationOnlyHandler.java
@@ -9,7 +9,9 @@ package com.facebook.react.packagerconnection;
 
 import androidx.annotation.Nullable;
 import com.facebook.common.logging.FLog;
+import com.facebook.infer.annotation.Nullsafe;
 
+@Nullsafe(Nullsafe.Mode.LOCAL)
 public abstract class NotificationOnlyHandler implements RequestHandler {
   private static final String TAG = JSPackagerClient.class.getSimpleName();
 
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/PackagerConnectionSettings.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/PackagerConnectionSettings.java
index 94572ae9ba9..ae9dc75e2b9 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/PackagerConnectionSettings.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/PackagerConnectionSettings.java
@@ -14,8 +14,10 @@ import android.text.TextUtils;
 import androidx.annotation.Nullable;
 import com.facebook.common.logging.FLog;
 import com.facebook.infer.annotation.Assertions;
+import com.facebook.infer.annotation.Nullsafe;
 import com.facebook.react.modules.systeminfo.AndroidInfoHelpers;
 
+@Nullsafe(Nullsafe.Mode.LOCAL)
 public class PackagerConnectionSettings {
   private static final String TAG = PackagerConnectionSettings.class.getSimpleName();
   private static final String PREFS_DEBUG_SERVER_HOST_KEY = "debug_http_host";
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/RequestOnlyHandler.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/RequestOnlyHandler.java
index 7edf0f404b7..ef66ca2519c 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/RequestOnlyHandler.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/RequestOnlyHandler.java
@@ -9,7 +9,9 @@ package com.facebook.react.packagerconnection;
 
 import androidx.annotation.Nullable;
 import com.facebook.common.logging.FLog;
+import com.facebook.infer.annotation.Nullsafe;
 
+@Nullsafe(Nullsafe.Mode.LOCAL)
 public abstract class RequestOnlyHandler implements RequestHandler {
   private static final String TAG = JSPackagerClient.class.getSimpleName();