diff --git a/convert.py b/convert.py
index 0f571a0..f3b837b 100644
--- a/convert.py
+++ b/convert.py
@@ -4,7 +4,7 @@ import argparse
 import os.path
 import time
 
-import colorspacious
+import colour
 from PIL import Image
 import numpy as np
 
@@ -91,13 +91,13 @@ def main():
                                        screen.Y_RES)).astype(np.float32)
 
     # convert from sRGB1-linear to CAM02UCS perceptually uniform colour space
-    cam02ucs = colorspacious.cspace_convert(
-        resized/255, "sRGB1-linear", colorspacious.CAM02UCS).astype(np.float32)
+    cam16ucs = colour.convert(
+        resized / 255, "RGB", "CAM16UCS").astype(np.float32)
     # print(cam02ucs)
 
     dither = dither_pattern.PATTERNS[args.dither]()
     output_nbit, _ = dither_pyx.dither_image(
-        screen, cam02ucs, dither, lookahead, args.verbose)
+        screen, cam16ucs, dither, lookahead, args.verbose)
     bitmap = screen.pack(output_nbit)
 
     # Show output image by rendering in target palette
diff --git a/palette.py b/palette.py
index 83b06a9..4f89305 100644
--- a/palette.py
+++ b/palette.py
@@ -1,6 +1,6 @@
 """RGB colour palettes to target for Apple II image conversions."""
 
-import colorspacious
+import colour
 import numpy as np
 import image
 
@@ -29,9 +29,8 @@ class Palette:
         for k, v in self.SRGB.items():
             self.RGB[k] = (np.clip(image.srgb_to_linear_array(v / 255), 0.0,
                                    1.0) * 255).astype(np.uint8)
-
-            self.CAM02UCS[k] = colorspacious.cspace_convert(
-                v, "sRGB255", colorspacious.CAM02UCS)
+            self.CAM02UCS[k] = colour.convert(
+                v / 255, "sRGB", "CAM16UCS").astype(np.float32)
 
         # print(self.CAM02UCS)