diff --git a/core/api/module-lib-current.txt b/core/api/module-lib-current.txt
index 992b57f356c54..a21ce79981933 100644
--- a/core/api/module-lib-current.txt
+++ b/core/api/module-lib-current.txt
@@ -109,6 +109,10 @@ package android.os {
     method public default int getStability();
   }
 
+  public class Process {
+    field public static final int VPN_UID = 1016; // 0x3f8
+  }
+
   public class StatsServiceManager {
     method @NonNull public android.os.StatsServiceManager.ServiceRegisterer getStatsCompanionServiceRegisterer();
     method @NonNull public android.os.StatsServiceManager.ServiceRegisterer getStatsManagerServiceRegisterer();
diff --git a/core/java/android/os/Process.java b/core/java/android/os/Process.java
index 8c2ca6d3e5091..9d16f18ab848a 100644
--- a/core/java/android/os/Process.java
+++ b/core/java/android/os/Process.java
@@ -16,8 +16,11 @@
 
 package android.os;
 
+import static android.annotation.SystemApi.Client.MODULE_LIBRARIES;
+
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.annotation.SystemApi;
 import android.annotation.TestApi;
 import android.compat.annotation.UnsupportedAppUsage;
 import android.system.ErrnoException;
@@ -104,6 +107,7 @@ public class Process {
      * @hide
      */
     @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
+    @SystemApi(client = MODULE_LIBRARIES)
     public static final int VPN_UID = 1016;
 
     /**