diff --git a/README.rst b/README.rst
index 214e446..787fabe 100644
--- a/README.rst
+++ b/README.rst
@@ -40,6 +40,15 @@ https://tcms-api.readthedocs.io/en/latest/modules/tcms_api.html
 CHANGELOG
 ---------
 
+v15.0 (22 Sep 2025)
+~~~~~~~~~~~~~~~~~~~
+
+- Include host URL in Referer header
+- Updates for newer pylint
+- Updates for newer Sphynx
+- Update GitHub actions
+
+
 v13.3 (10 Jun 2024)
 ~~~~~~~~~~~~~~~~~~~
 
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 4da4504..31bcf2c 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -77,4 +77,4 @@
 htmlhelp_basename = "tcmsapi"
 
 # Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {"http://docs.python.org/": None}
+intersphinx_mapping = {"python": ("https://docs.python.org/3", None)}
diff --git a/tcms_api/version.py b/tcms_api/version.py
index b38e934..e3b67aa 100644
--- a/tcms_api/version.py
+++ b/tcms_api/version.py
@@ -1 +1 @@
-__version__ = "13.3"
+__version__ = "15.0"
diff --git a/tcms_api/xmlrpc.py b/tcms_api/xmlrpc.py
index 7c9e9f2..dfe7202 100644
--- a/tcms_api/xmlrpc.py
+++ b/tcms_api/xmlrpc.py
@@ -24,7 +24,9 @@
 
 class TCMSProxy(ServerProxy):
     def __request(self, methodname, params):
-        self._ServerProxy__transport._extra_headers = [("Referer", methodname)]
+        self._ServerProxy__transport._extra_headers = [
+            ("Referer", f"{methodname}@{self._ServerProxy__host}")
+        ]
         return self._ServerProxy__request(methodname, params)
 
     def __getattr__(self, name):