diff --git a/CHANGES.rst b/CHANGES.rst
index 09f72ba64..82d52ccc4 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,3 +1,35 @@
+4.0.0 (2024-11-18)
+==================
+
+Feature
+-------
+
+- Switch default ASDF standard to 1.6.0. (`#1744
+  <https://github.com/asdf-format/asdf/pull/1744>`_)
+- Raise RuntimeError if a Convert subclass supports multiple tags but doesn't
+  implement select_tag. (`#1853
+  <https://github.com/asdf-format/asdf/pull/1853>`_)
+
+
+General
+-------
+
+- Set ``memmap=False`` to default for ``asdf.open`` and ``AsdfFile.__init__``.
+  (`#1801 <https://github.com/asdf-format/asdf/pull/1801>`_)
+
+
+Removal
+-------
+
+- remove ``copy_arrays`` (replaced by ``memmap``) (`#1800
+  <https://github.com/asdf-format/asdf/pull/1800>`_)
+- Remove deprecated API. See docs for full details. (`#1852
+  <https://github.com/asdf-format/asdf/pull/1852>`_)
+- Switch default convert_unknown_ndarray_subclasses to False and issue
+  deprecation warning if it is enabled. (`#1858
+  <https://github.com/asdf-format/asdf/pull/1858>`_)
+
+
 3.5.0 (2024-10-02)
 ==================
 
diff --git a/changes/1744.feature.rst b/changes/1744.feature.rst
deleted file mode 100644
index abaa28618..000000000
--- a/changes/1744.feature.rst
+++ /dev/null
@@ -1 +0,0 @@
-Switch default ASDF standard to 1.6.0.
diff --git a/changes/1800.removal.rst b/changes/1800.removal.rst
deleted file mode 100644
index 342b7822c..000000000
--- a/changes/1800.removal.rst
+++ /dev/null
@@ -1 +0,0 @@
-remove ``copy_arrays`` (replaced by ``memmap``)
diff --git a/changes/1801.general.rst b/changes/1801.general.rst
deleted file mode 100644
index 36c8bc4f7..000000000
--- a/changes/1801.general.rst
+++ /dev/null
@@ -1 +0,0 @@
-Set ``memmap=False`` to default for ``asdf.open`` and ``AsdfFile.__init__``.
diff --git a/changes/1852.removal.rst b/changes/1852.removal.rst
deleted file mode 100644
index 70b38712d..000000000
--- a/changes/1852.removal.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove deprecated API. See docs for full details.
diff --git a/changes/1853.feature.rst b/changes/1853.feature.rst
deleted file mode 100644
index f5817ef2c..000000000
--- a/changes/1853.feature.rst
+++ /dev/null
@@ -1 +0,0 @@
-Raise RuntimeError if a Convert subclass supports multiple tags but doesn't implement select_tag.
diff --git a/changes/1858.removal.rst b/changes/1858.removal.rst
deleted file mode 100644
index 03c2f3787..000000000
--- a/changes/1858.removal.rst
+++ /dev/null
@@ -1 +0,0 @@
-Switch default convert_unknown_ndarray_subclasses to False and issue deprecation warning if it is enabled.