Release notes and version bump for 6.5.4

diff --git a/docs/releases.rst b/docs/releases.rst
index 3d69d7af150aa8c3af7e5d3517331aaad6415d86..23502c2fec44a95c24f86dfb4aa3b317aa541e6e 100644 (file)
--- a/docs/releases.rst
+++ b/docs/releases.rst
@@ -4,6 +4,7 @@ Release notes
 .. toctree::
    :maxdepth: 2
 
+   releases/v6.5.4
    releases/v6.5.3
    releases/v6.5.2
    releases/v6.5.1

diff --git a/docs/releases/v6.5.4.rst b/docs/releases/v6.5.4.rst
new file mode 100644 (file)
index 0000000..7f3819f
--- /dev/null
+++ b/docs/releases/v6.5.4.rst
@@ -0,0 +1,13 @@
+What's new in Tornado 6.5.4
+===========================
+
+Dec 15, 2025
+------------
+
+Bug fixes
+~~~~~~~~~
+
+- The ``in`` operator for ``HTTPHeaders`` was incorrectly case-sensitive, causing
+  lookups to fail for headers with different casing than the original header name.
+  This was a regression in version 6.5.3 and has been fixed to restore the intended
+  case-insensitive behavior from version 6.5.2 and earlier.

diff --git a/tornado/__init__.py b/tornado/__init__.py
index 86a37d12c5b0738f44ceeed582416b915f769ea4..a100145884c6483ef6d3943d78446f4ca2f46048 100644 (file)
--- a/tornado/__init__.py
+++ b/tornado/__init__.py
@@ -22,8 +22,8 @@
 # is zero for an official release, positive for a development branch,
 # or negative for a release candidate or beta (after the base version
 # number has been incremented)
-version = "6.5.3"
-version_info = (6, 5, 3, 0)
+version = "6.5.4"
+version_info = (6, 5, 4, 0)
 
 import importlib
 import typing