diff --git a/colour_visuals/visual.py b/colour_visuals/visual.py
index 689356c..d95f9b0 100644
--- a/colour_visuals/visual.py
+++ b/colour_visuals/visual.py
@@ -97,6 +97,16 @@ def block_update(self) -> Generator:
 
         self._is_update_blocked = False
 
+    @abstractmethod
+    def update(self):
+        """
+        Update the visual.
+
+        Notes
+        -----
+        -   Must be reimplemented by sub-classes.
+        """
+
 
 class MixinPropertyCMFS:
     """
@@ -463,16 +473,6 @@ def model(self, value: LiteralColourspaceModel | str):
 
         self._model = validate_method(value, tuple(COLOURSPACE_MODELS))
 
-    @abstractmethod
-    def update(self):
-        """
-        Update the visual.
-
-        Notes
-        -----
-        -   Must be reimplemented by sub-classes.
-        """
-
 
 class MixinPropertyOpacity:
     """