diff --git a/CHANGES.md b/CHANGES.md
index 39f73eb..3108388 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,10 @@
 # ColorHelper
 
+## 6.4.1
+
+-   **FIX**: Fix regression due to not accounting to API change when  
+    upgrading to latest ColorAide.
+
 ## 6.4.0
 
 -   **NEW**: Opt into Python 3.8.
diff --git a/ch_picker.py b/ch_picker.py
index a31f43b..2f65ff8 100644
--- a/ch_picker.py
+++ b/ch_picker.py
@@ -502,7 +502,7 @@ def get_channel(self, channel, label, color_filter, mode='undefined'):
         clone = self.color.clone()
         show_alpha = color_filter == 'alpha'
 
-        coord = alg.no_nan(clone[color_filter])
+        coord = clone.get(color_filter, nans=False)
         if color_filter != 'hue':
             rounded = alg.round_half_up(coord, 2 if mode != 'hsluv' else 0)
             clone[color_filter] = rounded
@@ -514,7 +514,7 @@ def get_channel(self, channel, label, color_filter, mode='undefined'):
 
         first = True
         while count:
-            coord = alg.no_nan(clone[color_filter]) - step
+            coord = clone.get(color_filter, nans=False) - step
             clone[color_filter] = coord
 
             if color_filter != "hue" and (coord < 0 or coord > (1 * scale)):
@@ -564,7 +564,7 @@ def get_channel(self, channel, label, color_filter, mode='undefined'):
         clone.update(self.color)
         clone[color_filter] = rounded
         while count:
-            coord = alg.no_nan(clone[color_filter]) + step
+            coord = clone.get(color_filter, nans=False) + step
             clone[color_filter] = coord
 
             if color_filter != "hue" and (coord < 0 or coord > (1 * scale)):
diff --git a/messages/recent.md b/messages/recent.md
index a4566e8..c057d25 100644
--- a/messages/recent.md
+++ b/messages/recent.md
@@ -9,6 +9,7 @@ A restart of Sublime Text is **strongly** encouraged.
 
 Please report any issues as we _might_ have missed some required updates  
 related to the upgrade to stable `coloraide`.
+
 ## 6.4.0
 
 -   **NEW**: Opt into Python 3.8.
diff --git a/support.py b/support.py
index e8c6c6d..f589f54 100644
--- a/support.py
+++ b/support.py
@@ -5,7 +5,7 @@
 import webbrowser
 import re
 
-__version__ = "6.4.0"
+__version__ = "6.4.1"
 __pc_name__ = 'ColorHelper'
 
 CSS = '''