diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index c6ebac78a95cdd6d79d0908561749871937fd3ca..f8fcd312c170a4eb392ab073b3abb21e8feed939 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -2,8 +2,8 @@ This document contains the ``fslpy`` release history in reverse chronological
 order.
 
 
-3.5.0 (Under development)
--------------------------
+3.5.0 (Tuesday 19th January 2021)
+---------------------------------
 
 
 Added
diff --git a/COPYRIGHT b/COPYRIGHT
index 2b9a3c28bd9d162848efdb59e6ce0ea744c83a85..ca6e317895149e49a34705663c4c40bbc2277cec 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -1 +1 @@
-Copyright 2016-2020 University of Oxford, Oxford, UK
+Copyright 2016-2021 University of Oxford, Oxford, UK
diff --git a/LICENSE b/LICENSE
index 611fcba5618c84542bbea51bb0329fd035ff3724..29dca5745c25932d5ed83f120fce41be0c17340f 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 The fslpy library
 
-Copyright 2016-2020 University of Oxford, Oxford, UK.
+Copyright 2016-2021 University of Oxford, Oxford, UK.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/README.rst b/README.rst
index 797b5345ba2bce7dc0b6964649bf6e0d45ff48de..f8b8fd8a118d8b0ee4e3070735c2d56b6d3e7b56 100644
--- a/README.rst
+++ b/README.rst
@@ -19,7 +19,7 @@ programming library written in Python. It is used by `FSLeyes
 <https://git.fmrib.ox.ac.uk/fsl/fsleyes/fsleyes/>`_.
 
 
-``fslpy`` is tested against Python versions 3.5, 3.6 and 3.7.
+``fslpy`` is tested against Python versions 3.6, 3.7, 3.8 and 3.9.
 
 
 Installation