diff --git a/CHANGES.rst b/CHANGES.rst
index dec4930a5..8d0790f25 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,41 @@
 Changes
 =======
 
+1.9.0
+-----
+
+Added some math functions, for example ``Abs``, ``Ceil``, ``Floor`` and
+``Round``.
+
+.. code-block:: python
+
+  >>> from piccolo.query.functions import Round
+  >>> await Ticket.select(Round(Ticket.price, alias="price"))
+  [{'price': 50.0}]
+
+Added more operators to ``QueryString`` (multiply, divide, modulus, power), so
+we can do things like:
+
+.. code-block:: python
+
+  >>> await Ticket.select(Round(Ticket.price) * 2)
+  [{'price': 100.0}]
+
+Fixed some edge cases around defaults for ``Array`` columns.
+
+.. code-block:: python
+
+  def get_default():
+      # This used to fail:
+      return [datetime.time(hour=8, minute=0)]
+
+  class MyTable(Table):
+      times = Array(Time(), default=get_default)
+
+Fixed some deprecation warnings, and improved CockroachDB array tests.
+
+-------------------------------------------------------------------------------
+
 1.8.0
 -----
 
diff --git a/piccolo/__init__.py b/piccolo/__init__.py
index a407d5275..26de05016 100644
--- a/piccolo/__init__.py
+++ b/piccolo/__init__.py
@@ -1 +1 @@
-__VERSION__ = "1.8.0"
+__VERSION__ = "1.9.0"