diff --git a/core/java/android/provider/ContactsContract.java b/core/java/android/provider/ContactsContract.java
index 1b13f527f21e2..70a20d6f09956 100644
--- a/core/java/android/provider/ContactsContract.java
+++ b/core/java/android/provider/ContactsContract.java
@@ -56,6 +56,14 @@ public final class ContactsContract {
      */
     public static final String CALLER_IS_SYNCADAPTER = "caller_is_syncadapter";
 
+    /**
+     * A query parameter key used to specify the package that is requesting a query.
+     * This is used for restricting data based on package name.
+     *
+     * @hide
+     */
+    public static final String REQUESTING_PACKAGE_PARAM_KEY = "requesting_package";
+
     /**
      * @hide should be removed when users are updated to refer to SyncState
      * @deprecated use SyncState instead