diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index bdffec57e..3b0eb2eb0 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -10,6 +10,8 @@ and this project adheres to `Semantic Versioning <https://semver.org/spec/v2.0.0
 `Unreleased`_
 =============
 
+- Added Bitchat Bluetooth Mesh Service and Characteristic UUIDs, `Referred to official Bitchat repo <https://github.com/permissionlesstech/bitchat>`_.
+
 `1.0.1`_ (2025-06-30)
 =====================
 
diff --git a/bleak/uuids.py b/bleak/uuids.py
index 4f4c2a3e6..0f0dc15c3 100644
--- a/bleak/uuids.py
+++ b/bleak/uuids.py
@@ -1172,6 +1172,9 @@
     "ef680500-9b35-4933-9b10-52ffa9740042": "Thingy Sound Service",
     "ef680300-9b35-4933-9b10-52ffa9740042": "Thingy User Interface Service",
     "b35d7da6-eed4-4d59-8f89-f6573edea967": "URI Beacon Config (V1)",
+    # Bitchat
+    "f47b5e2d-4a9e-4c5a-9b3f-8e1d2c3a4b5c": "Bitchat Bluetooth Mesh Service",
+    "a1b2c3d4-e5f6-4a5b-8c9d-0e1f2a3b4c5d": "Bitchat Bluetooth Mesh Characteristic",
 }