diff --git a/library/CHANGELOG.txt b/library/CHANGELOG.txt
index d9bb763..3aec20c 100644
--- a/library/CHANGELOG.txt
+++ b/library/CHANGELOG.txt
@@ -1,3 +1,8 @@
+4.0.0
+-----
+
+* Warning: Removed "neopixel" module from this library, use "rpi_ws281x" instead, see #8
+
 3.1.0
 -----
 
diff --git a/library/setup.py b/library/setup.py
index 52d8c7a..f6eb6d1 100755
--- a/library/setup.py
+++ b/library/setup.py
@@ -17,7 +17,7 @@ def run(self):
         build_py.run(self)
 
 setup(name              = 'rpi_ws281x',
-      version           = '3.1.0',
+      version           = '4.0.0',
       author            = 'Jeremy Garff <jer@jers.net>, Phil Howard <phil@pimoroni.com>',
       author_email      = 'jer@jers.net, phil@pimoroni.com',
       description       = 'Userspace Raspberry Pi PWM/PCM/SPI library for SK6812 and WS281X LEDs.',