diff --git a/bta_proxy/packets/__init__.py b/bta_proxy/packets/__init__.py
index 4226831..1fcd69b 100644
--- a/bta_proxy/packets/__init__.py
+++ b/bta_proxy/packets/__init__.py
@@ -75,3 +75,4 @@ from .packet137updateflag import Packet137UpdateFlag
 from .packet139setpaintingmotive import Packet139SetPaintingMotive
 from .packet141updateflag import Packet141UpdateFlag
 from .packet105updateprogressbar import Packet105UpdateProgressbar
+from .packet142openflagwindow import Packet142OpenFlagWindow
diff --git a/bta_proxy/packets/packet141updateflag.py b/bta_proxy/packets/packet141updateflag.py
index 9cf6833..070023f 100644
--- a/bta_proxy/packets/packet141updateflag.py
+++ b/bta_proxy/packets/packet141updateflag.py
@@ -8,4 +8,5 @@ class Packet141UpdateFlag(Packet, packet_id=141):
         ('z', 'int'),
         ('colors', ('bytes', 384)),
         ('items', ('list', 3, 'nbt')),
+        ('owner', 'string')
     ]
diff --git a/bta_proxy/packets/packet142openflagwindow.py b/bta_proxy/packets/packet142openflagwindow.py
new file mode 100644
index 0000000..b9640b7
--- /dev/null
+++ b/bta_proxy/packets/packet142openflagwindow.py
@@ -0,0 +1,10 @@
+from .base import Packet
+
+class Packet142OpenFlagWindow(Packet, packet_id=142):
+    __slots__ = ('window_id', 'x', 'y', 'z')
+    FIELDS = [
+        ('window_id', 'ubyte'),
+        ('x', 'int'),
+        ('y', 'short'),
+        ('z', 'int'),
+    ]