diff --git a/CHANGES.rst b/CHANGES.rst
index 473b9d3b1..54fb05ab5 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -14,6 +14,45 @@ Changelog
 
 .. towncrier release notes start
 
+6.6.4
+=====
+
+*(2025-08-11)*
+
+
+Bug fixes
+---------
+
+- Fixed ``MutliDict`` & ``CIMultiDict`` memory leak when deleting values or clearing them 
+  -- by :user:`Vizonex`
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`1233`.
+
+
+Contributor-facing changes
+--------------------------
+
+- The type preciseness coverage report generated by `MyPy
+  <https://mypy-lang.org>`__ is now uploaded to `Coveralls
+  <https://coveralls.io/github/aio-libs/multidict>`__ and
+  will not be included in the `Codecov views
+  <https://app.codecov.io/gh/aio-libs/multidict>`__ going forward
+  -- by :user:`webknjaz`.
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`1122`, :issue:`1231`.
+
+- Added memory leak test for popping or deleting attributes from a multidict to prevent future issues or bogus claims.
+  -- by :user:`Vizonex`
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`1233`.
+
+
+----
+
+
 6.6.3
 =====
 
diff --git a/CHANGES/1122.contrib.rst b/CHANGES/1122.contrib.rst
deleted file mode 100644
index aa700103e..000000000
--- a/CHANGES/1122.contrib.rst
+++ /dev/null
@@ -1,6 +0,0 @@
-The type preciseness coverage report generated by `MyPy
-<https://mypy-lang.org>`__ is now uploaded to `Coveralls
-<https://coveralls.io/github/aio-libs/multidict>`__ and
-will not be included in the `Codecov views
-<https://app.codecov.io/gh/aio-libs/multidict>`__ going forward
--- by :user:`webknjaz`.
diff --git a/CHANGES/1231.contrib.rst b/CHANGES/1231.contrib.rst
deleted file mode 120000
index b0b6a8ef6..000000000
--- a/CHANGES/1231.contrib.rst
+++ /dev/null
@@ -1 +0,0 @@
-1122.contrib.rst
\ No newline at end of file
diff --git a/CHANGES/1233.bugfix.rst b/CHANGES/1233.bugfix.rst
deleted file mode 100644
index e5a659027..000000000
--- a/CHANGES/1233.bugfix.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Fix ``MutliDict`` & ``CIMultiDict`` memory leak when deleting values or clearing them 
--- by :user:`Vizonex`
diff --git a/CHANGES/1233.contrib.rst b/CHANGES/1233.contrib.rst
deleted file mode 100644
index ff5f12226..000000000
--- a/CHANGES/1233.contrib.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Added memory leak test for popping or deleting attributes from a multidict to prevent future issues or bogus claims.
--- by :user:`Vizonex`
diff --git a/multidict/__init__.py b/multidict/__init__.py
index c506324f3..bd03149de 100644
--- a/multidict/__init__.py
+++ b/multidict/__init__.py
@@ -22,7 +22,7 @@
     "getversion",
 )
 
-__version__ = "6.6.3"
+__version__ = "6.6.4"
 
 
 if TYPE_CHECKING or not USE_EXTENSIONS: