diff --git a/library/CHANGELOG.txt b/library/CHANGELOG.txt
index 8db546c..5420820 100644
--- a/library/CHANGELOG.txt
+++ b/library/CHANGELOG.txt
@@ -1,3 +1,9 @@
+4.3.3
+-----
+
+* New: Added support for Revision 0xc03115 (Pi 4, 4GB v1.5)
+* New: Added support for Revision 0xd03115 (Pi 4, 8GB v1.5)
+
 4.3.2
 -----
 
diff --git a/library/rpi_ws281x/__init__.py b/library/rpi_ws281x/__init__.py
index 728743f..39b0d34 100644
--- a/library/rpi_ws281x/__init__.py
+++ b/library/rpi_ws281x/__init__.py
@@ -2,4 +2,4 @@
 from .rpi_ws281x import PixelStrip, Adafruit_NeoPixel, Color, ws
 from _rpi_ws281x import *
 
-__version__ = '4.3.0'
+__version__ = '4.3.3'
diff --git a/library/setup.py b/library/setup.py
index e17d7c0..12c153a 100755
--- a/library/setup.py
+++ b/library/setup.py
@@ -13,7 +13,7 @@ def run(self):
         build_py.run(self)
 
 setup(name              = 'rpi_ws281x',
-      version           = '4.3.2',
+      version           = '4.3.3',
       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.',