diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index f38de64..ad68287 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,9 @@
 [bumpversion]
-current_version = 0.9.3
+current_version = 0.99
+parse = (?P<major>\d+)\.(?P<minor>\d+)(?:\.(?P<patch>\d+))?
+serialize = 
+	{major}.{minor}.{patch}
+	{major}.{minor}
 
 [bumpversion:file:README.rst]
 
diff --git a/README.rst b/README.rst
index a2a5840..0e55c83 100644
--- a/README.rst
+++ b/README.rst
@@ -14,7 +14,7 @@ Python Monero module
 
 A comprehensive Python module for handling Monero cryptocurrency.
 
-* release 0.9.3
+* release 0.99
 * open source: https://github.com/monero-ecosystem/monero-python
 * works with Monero 0.13.x and `the latest source`_ (at least we try to keep up)
 * Python 2.x and 3.x compatible
diff --git a/docs/source/conf.py b/docs/source/conf.py
index bf847fd..b9fe15e 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -56,9 +56,9 @@ author = "Michal Salaban"
 # built documents.
 #
 # The short X.Y version.
-version = "0.9.3"
+version = "0.99"
 # The full version, including alpha/beta/rc tags.
-release = "0.9.3"
+release = "0.99"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/docs/source/release_notes.rst b/docs/source/release_notes.rst
index 4601b18..b5b3dd3 100644
--- a/docs/source/release_notes.rst
+++ b/docs/source/release_notes.rst
@@ -1,6 +1,19 @@
 Release Notes
 =============
 
+0.99
+----
+
+This is a test release before 1.0. The reference library for Ed25519 cryptography has been dropped
+and replaced with `pynacl`_ which is a wrapper over `libsodium`_, the industry standard
+lightning-fast C library.
+
+There are no backward-incompatible changes in the API. The aim is to have the software tested
+thoroughly before the first stable release.
+
+.. _`pynacl`: https://github.com/pyca/pynacl/
+.. _`libsodium`: https://github.com/jedisct1/libsodium/
+
 0.9
 ---
 
diff --git a/monero/__init__.py b/monero/__init__.py
index 62d6617..0a4c3be 100644
--- a/monero/__init__.py
+++ b/monero/__init__.py
@@ -1,3 +1,3 @@
 from . import address, account, const, daemon, wallet, numbers, wordlists, seed
 
-__version__ = "0.9.3"
+__version__ = "0.99"