diff --git a/CHANGES.rst b/CHANGES.rst
index 88826347584..e536efd2fa0 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -10,6 +10,127 @@
 
 .. towncrier release notes start
 
+3.12.13 (2025-10-06)
+====================
+
+Features
+--------
+
+- Added support for Python 3.14.
+
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`10851`, :issue:`10872`.
+
+
+
+- Added support for free-threading in Python 3.14+ -- by :user:`kumaraditya303`.
+
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`11466`, :issue:`11464`.
+
+
+
+- Added support for Zstandard (aka Zstd) compression
+  -- by :user:`KGuillaume-chaps`.
+
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`11161`.
+
+
+
+- Added ``StreamReader.total_raw_bytes`` to check the number of bytes downloaded
+  -- by :user:`robpats`.
+
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`11483`.
+
+
+
+Bug fixes
+---------
+
+- Fixed pytest plugin to not use deprecated :py:mod:`asyncio` policy APIs.
+
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`10851`.
+
+
+
+- Updated `Content-Disposition` header parsing to handle trailing semicolons and empty parts
+  -- by :user:`PLPeeters`.
+
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`11243`.
+
+
+
+- Fixed saved ``CookieJar`` failing to be loaded if cookies have ``partitioned`` flag when
+  ``http.cookie`` does not have partitioned cookies supports. -- by :user:`Cycloctane`.
+
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`11523`.
+
+
+
+
+Improved documentation
+----------------------
+
+- Added ``Wireup`` to third-party libraries -- by :user:`maldoinc`.
+
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`11233`.
+
+
+
+
+Packaging updates and notes for downstreams
+-------------------------------------------
+
+- The `blockbuster` test dependency is now optional; the corresponding test fixture is disabled when it is unavailable
+  -- by :user:`musicinybrain`.
+
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`11363`.
+
+
+
+- Added ``riscv64`` build to releases -- by :user:`eshattow`.
+
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`11425`.
+
+
+
+
+Contributor-facing changes
+--------------------------
+
+
+
+- Fixed ``test_send_compress_text`` failing when alternative zlib implementation
+  is used. (``zlib-ng`` in python 3.14 windows build) -- by :user:`Cycloctane`.
+
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`11546`.
+
+
+
+
+----
+
+
 3.12.15 (2025-07-28)
 ====================
 
diff --git a/CHANGES/10851.bugfix.rst b/CHANGES/10851.bugfix.rst
deleted file mode 100644
index 9c47cc95905..00000000000
--- a/CHANGES/10851.bugfix.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fixed pytest plugin to not use deprecated :py:mod:`asyncio` policy APIs.
diff --git a/CHANGES/10851.contrib.rst b/CHANGES/10851.contrib.rst
deleted file mode 100644
index 623f96bc227..00000000000
--- a/CHANGES/10851.contrib.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Updated tests to avoid using deprecated :py:mod:`asyncio` policy APIs and
-make it compatible with Python 3.14.
diff --git a/CHANGES/10872.contrib.rst b/CHANGES/10872.contrib.rst
deleted file mode 100644
index 6a95cd3e64a..00000000000
--- a/CHANGES/10872.contrib.rst
+++ /dev/null
@@ -1 +0,0 @@
-Updated dependencies to allow testing on Python 3.14.
diff --git a/CHANGES/11161.feature.rst b/CHANGES/11161.feature.rst
deleted file mode 100644
index 617c4147a38..00000000000
--- a/CHANGES/11161.feature.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Add support for Zstandard (aka Zstd) compression
--- by :user:`KGuillaume-chaps`.
diff --git a/CHANGES/11233.doc.rst b/CHANGES/11233.doc.rst
deleted file mode 100644
index 4d63afa7d88..00000000000
--- a/CHANGES/11233.doc.rst
+++ /dev/null
@@ -1 +0,0 @@
-Added ``Wireup`` to third-party libraries -- by :user:`maldoinc`.
diff --git a/CHANGES/11243.bugfix b/CHANGES/11243.bugfix
deleted file mode 100644
index 98ae195bb16..00000000000
--- a/CHANGES/11243.bugfix
+++ /dev/null
@@ -1,2 +0,0 @@
-Updated `Content-Disposition` header parsing to handle trailing semicolons and empty parts
--- by :user:`PLPeeters`.
diff --git a/CHANGES/11363.packaging b/CHANGES/11363.packaging
deleted file mode 100644
index 65d54bf48c0..00000000000
--- a/CHANGES/11363.packaging
+++ /dev/null
@@ -1,2 +0,0 @@
-The `blockbuster` test dependency is now optional; the corresponding test fixture is disabled when it is unavailable
--- by :user:`musicinybrain`.
diff --git a/CHANGES/11425.packaging.rst b/CHANGES/11425.packaging.rst
deleted file mode 100644
index a3cad5f6d96..00000000000
--- a/CHANGES/11425.packaging.rst
+++ /dev/null
@@ -1 +0,0 @@
-Added ``riscv64`` build to releases -- by :user:`eshattow`.
diff --git a/CHANGES/11464.feature.rst b/CHANGES/11464.feature.rst
deleted file mode 100644
index 12ebf117883..00000000000
--- a/CHANGES/11464.feature.rst
+++ /dev/null
@@ -1 +0,0 @@
-Implemented support for free-threading builds of CPython -- by :user:`kumaraditya303`.
diff --git a/CHANGES/11466.contrib.rst b/CHANGES/11466.contrib.rst
deleted file mode 100644
index 07c5f40c82e..00000000000
--- a/CHANGES/11466.contrib.rst
+++ /dev/null
@@ -1 +0,0 @@
-Added free-threading CI job for CPython 3.14 -- by :user:`kumaraditya303`.
diff --git a/CHANGES/11483.feature.rst b/CHANGES/11483.feature.rst
deleted file mode 100644
index a8ef8b62c44..00000000000
--- a/CHANGES/11483.feature.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Added ``StreamReader.total_raw_bytes`` to check the number of bytes downloaded
--- by :user:`robpats`.
diff --git a/CHANGES/11523.bugfix.rst b/CHANGES/11523.bugfix.rst
deleted file mode 100644
index 7b70bcf6e76..00000000000
--- a/CHANGES/11523.bugfix.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Fix saved ``CookieJar`` fail to be loaded if cookies have ``partitioned`` flag when
-``http.cookie`` does not have partitioned cookies supports. -- by :user:`Cycloctane`.
diff --git a/CHANGES/11546.contrib.rst b/CHANGES/11546.contrib.rst
deleted file mode 100644
index 5fda1bdbb98..00000000000
--- a/CHANGES/11546.contrib.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Fixed ``test_send_compress_text`` failing when alternative zlib implementation
-is used. (``zlib-ng`` in python 3.14 windows build) -- by :user:`Cycloctane`.
diff --git a/aiohttp/__init__.py b/aiohttp/__init__.py
index 5ef03daa84e..92a7adc59cb 100644
--- a/aiohttp/__init__.py
+++ b/aiohttp/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "3.13.0.dev0"
+__version__ = "3.13.0"
 
 from typing import TYPE_CHECKING, Tuple