diff --git a/core/api/system-current.txt b/core/api/system-current.txt
index 8ae5a2648e39d..e224a01e367ec 100644
--- a/core/api/system-current.txt
+++ b/core/api/system-current.txt
@@ -9781,6 +9781,7 @@ package android.os {
     method @NonNull public static String formatUid(int);
     method public static int getAppId(int);
     method public int getIdentifier();
+    method public static int getSharedAppGid(int);
     method public int getUid(int);
     method @Deprecated public boolean isOwner();
     method public boolean isSystem();
diff --git a/core/java/android/os/UserHandle.java b/core/java/android/os/UserHandle.java
index 3d5abb3b8a2f3..19706cbbe48d0 100644
--- a/core/java/android/os/UserHandle.java
+++ b/core/java/android/os/UserHandle.java
@@ -404,7 +404,12 @@ public final class UserHandle implements Parcelable {
         return getUid(userId, Process.SHARED_USER_GID);
     }
 
-    /** @hide */
+    /**
+     * Returns the gid shared between all users with the app that this uid represents, or -1 if the
+     * uid is invalid.
+     * @hide
+     */
+    @SystemApi
     public static int getSharedAppGid(int uid) {
         return getSharedAppGid(getUserId(uid), getAppId(uid));
     }