org.json migration issue

My project uses both Wicket and Google Firebase.

After migrating to Wicket8 M4 I have this issue:

java.lang.NoSuchMethodError: org.json.JSONStringer.object()Lorg/json/JSONWriter;
at com.google.firebase.database.util.JsonMapper.serializeJsonValue(JsonMapper.java:56)
at com.google.firebase.database.util.JsonMapper.serializeJsonValue(JsonMapper.java:45)
at com.google.firebase.database.util.JsonMapper.serializeJson(JsonMapper.java:25)
at com.google.firebase.database.util.GAuthToken.serializeToString(GAuthToken.java:53)
at com.google.firebase.database.core.JvmAuthTokenProvider$1.onComplete(JvmAuthTokenProvider.java:40)
at com.google.firebase.tasks.OnCompleteCompletionListener$1.run(OnCompleteCompletionListener.java:37)

Reason: Google libraries uses one library and Wicket uses another by the same name. These 2 libraries are in conflict.