diff --git a/CHANGELOG.md b/CHANGELOG.md
index 71f94b0..4fc4e4f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # xbotlib x.x.x (UNRELEASED)
 
+# xbotlib 0.12.3 (2021-01-17)
+
+- Support OOB URLs in `SimpleMessage`
+
 # xbotlib 0.12.2 (2021-01-17)
 
 - Support loading Jinja2 template ([#30](https://git.autonomic.zone/decentral1se/xbotlib/issues/30))
diff --git a/README.md b/README.md
index cf04baf..a11f6e5 100644
--- a/README.md
+++ b/README.md
@@ -119,6 +119,7 @@ Attributes:
 - **receiver**: the receiver of the message
 - **nick**: the nickname of the sender
 - **type**: the type of message
+- **url**: The URL of a sent file
 
 ## Working with your bot
 
diff --git a/pyproject.toml b/pyproject.toml
index c4abbfd..ea08649 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "poetry.masonry.api"
 
 [tool.poetry]
 name = "xbotlib"
-version = "0.12.2"
+version = "0.12.3"
 description = "XMPP bots for humans"
 authors = ["decentral1se <lukewm@riseup.net>"]
 maintainers = ["decentral1se <lukewm@riseup.net>"]
diff --git a/xbotlib.py b/xbotlib.py
index 0aa292b..f24a116 100644
--- a/xbotlib.py
+++ b/xbotlib.py
@@ -85,6 +85,11 @@ class SimpleMessage:
         """The nick of the message."""
         return self.message["mucnick"]
 
+    @property
+    def url(self):
+        """The URL of a sent file."""
+        return self.message["oob"]["url"]
+
 
 class Config:
     """Bot file configuration."""
@@ -533,6 +538,7 @@ class Bot(ClientXMPP):
         self.register_plugin("xep_0045")  # Multi-User Chat
         self.register_plugin("xep_0199")  # XMPP Ping
         self.register_plugin("xep_0084")  # User Avatar
+        self.register_plugin("xep_0066")  # Proces URIs (files, images)
 
         try:
             for plugin in self.plugins: