diff --git a/docs/source/changes.rst b/docs/source/changes.rst
index 006f2fb5e..d018da1c1 100644
--- a/docs/source/changes.rst
+++ b/docs/source/changes.rst
@@ -11,7 +11,7 @@ chronological order. All previous releases should still be available on pip.
 .. _v0.12.0:
 
 ----------------------
-0.12.0rc8 - 2023-11-25
+0.12.0rc9 - 2023-11-26
 ----------------------
 
 
@@ -27,7 +27,7 @@ Here is a stripped-down example.
    :caption: Basic structure for adding custom auto-config support for a type.
 
    from hydra_zen import BuildsFn
-   from hydra_zen.typing import SupportedPrimitive
+   from hydra_zen.typing import CustomConfigType
    
    # We want builds/just/make_config to be able to automatically
    # configure instances of `SomeType`
@@ -37,7 +37,7 @@ Here is a stripped-down example.
    # The type parameter provided to `BuildsFn[...]` updates the type
    # annotations of the config-creation functions so that type-checkers
    # know that `SomeType` is now supported.
-   class CustomBuilds(BuildsFn[SomeType | SupportedPrimitive]):
+   class CustomBuilds(BuildsFn[CustomConfigType[SomeType]]):
        """
        - To customize type-refinement support, override `_sanitized_type`.
        - To customize auto-config support, override `_make_hydra_compatible`.
diff --git a/src/hydra_zen/structured_configs/_implementations.py b/src/hydra_zen/structured_configs/_implementations.py
index 00af0e36d..2aca41e72 100644
--- a/src/hydra_zen/structured_configs/_implementations.py
+++ b/src/hydra_zen/structured_configs/_implementations.py
@@ -3421,8 +3421,8 @@ def kwargs_of(
 
         Excluding the first parameter from the target's signature:
 
-        >>> Config = kwargs_of(lambda *, x, y: None, zen_exclude=[0])
-        >>> signature(Config)
+        >>> Config = kwargs_of(lambda *, x, y: None, zen_exclude=(0,))
+        >>> signature(Config)  # note: type checkers sees that x is removed as well
         <Signature (y: Any) -> None>
         >>> instantiate(Config(y=88))
         {'y': 88}