diff --git a/CHANGES.rst b/CHANGES.rst
index 89525bf9b51..6f814e43817 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -10,6 +10,48 @@
 
 .. towncrier release notes start
 
+3.11.17 (2025-04-19)
+====================
+
+Miscellaneous internal changes
+------------------------------
+
+- Optimized web server performance when access logging is disabled by reducing time syscalls -- by :user:`bdraco`.
+
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`10713`.
+
+
+
+- Improved web server performance when connection can be reused -- by :user:`bdraco`.
+
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`10714`.
+
+
+
+- Improved performance of the WebSocket reader -- by :user:`bdraco`.
+
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`10740`.
+
+
+
+- Improved performance of the WebSocket reader with large messages -- by :user:`bdraco`.
+
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`10744`.
+
+
+
+
+----
+
+
 3.11.16 (2025-04-01)
 ====================
 
diff --git a/CHANGES/10713.misc.rst b/CHANGES/10713.misc.rst
deleted file mode 100644
index a556d11e1e0..00000000000
--- a/CHANGES/10713.misc.rst
+++ /dev/null
@@ -1 +0,0 @@
-Optimized web server performance when access logging is disabled by reducing time syscalls -- by :user:`bdraco`.
diff --git a/CHANGES/10714.misc.rst b/CHANGES/10714.misc.rst
deleted file mode 100644
index a36a80872f5..00000000000
--- a/CHANGES/10714.misc.rst
+++ /dev/null
@@ -1 +0,0 @@
-Improved web server performance when connection can be reused -- by :user:`bdraco`.
diff --git a/CHANGES/10740.misc.rst b/CHANGES/10740.misc.rst
deleted file mode 100644
index 34ed19aebba..00000000000
--- a/CHANGES/10740.misc.rst
+++ /dev/null
@@ -1 +0,0 @@
-Improved performance of the WebSocket reader -- by :user:`bdraco`.
diff --git a/CHANGES/10744.misc.rst b/CHANGES/10744.misc.rst
deleted file mode 100644
index da0d379475d..00000000000
--- a/CHANGES/10744.misc.rst
+++ /dev/null
@@ -1 +0,0 @@
-Improved performance of the WebSocket reader with large messages -- by :user:`bdraco`.
diff --git a/tests/test_websocket_parser.py b/tests/test_websocket_parser.py
index 41da6b4e16e..6199abae359 100644
--- a/tests/test_websocket_parser.py
+++ b/tests/test_websocket_parser.py
@@ -330,6 +330,17 @@ def test_simple_binary(
     assert res == WSMessageBinary(data=b"binary", size=6, extra="")
 
 
+def test_one_byte_at_a_time(
+    out: WebSocketDataQueue, parser: PatchableWebSocketReader
+) -> None:
+    """Send one byte at a time to the parser."""
+    data = build_frame(b"binary", WSMsgType.BINARY)
+    for i in range(len(data)):
+        parser._feed_data(data[i : i + 1])
+    res = out._buffer[0]
+    assert res == WSMessageBinary(data=b"binary", size=6, extra="")
+
+
 def test_fragmentation_header(
     out: WebSocketDataQueue, parser: PatchableWebSocketReader
 ) -> None: