Add UUID for upcoming 2.5b3.
diff --git a/Tools/msi/uuids.py b/Tools/msi/uuids.py
index ce7e604..3064975 100644
--- a/Tools/msi/uuids.py
+++ b/Tools/msi/uuids.py
@@ -27,6 +27,7 @@
     '2.5.103': '{73dcd966-ffec-415f-bb39-8342c1f47017}', # 2.5a3
     '2.5.111': '{c797ecf8-a8e6-4fec-bb99-526b65f28626}', # 2.5b1
     '2.5.112': '{32beb774-f625-439d-b587-7187487baf15}', # 2.5b2
+    '2.5.113': '{89f23918-11cf-4f08-be13-b9b2e6463fd9}', # 2.5b3
     '2.5.121': '{8e9321bc-6b24-48a3-8fd4-c95f8e531e5f}', # 2.5c1
     '2.5.122': '{a6cd508d-9599-45da-a441-cbffa9f7e070}', # 2.5c2
     '2.5.150': '{0a2c5854-557e-48c8-835a-3b9f074bdcaa}', # 2.5.0