diff --git a/configurize/config.py b/configurize/config.py
index 0c78bb3..4f8424f 100644
--- a/configurize/config.py
+++ b/configurize/config.py
@@ -11,7 +11,7 @@
 
 from .allowed_types import recur_to_allowed_types
 from .data_class import DataClass
-from .reference import Ref
+from .reference import CfgReferenceError, Ref
 from .utils import get_func_brief, writable_property
 
 
@@ -196,7 +196,7 @@ def _deref(self, name, value, deref=True):
                 else:
                     value.cur_value = cur
             except (AttributeError, AssertionError, TypeError):
-                if value.default is ReferenceError:
+                if value.default is CfgReferenceError:
                     if deref:
                         raise value.default(
                             f"Unable to find reference of <{value.ref_str}> @ {self._class_name}"
diff --git a/configurize/reference.py b/configurize/reference.py
index 58318c2..bce7e4a 100644
--- a/configurize/reference.py
+++ b/configurize/reference.py
@@ -1,4 +1,4 @@
-class ReferenceError(LookupError):
+class CfgReferenceError(LookupError):
     def __str__(self):
         import traceback
 
@@ -45,7 +45,7 @@ class Exp:
     }
     """
 
-    def __init__(self, ref_str: str, default=ReferenceError):
+    def __init__(self, ref_str: str, default=CfgReferenceError):
         assert ref_str.startswith(".")
         self.ref_str = ref_str
         self.actions = self._parse_level(ref_str)
diff --git a/pyproject.toml b/pyproject.toml
index 2003e82..4af4c9b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "configurize"
-version = "0.1.2"
+version = "0.1.3"
 description = "Hierarchical configuration management with inheritance, cross-references, and diffing"
 readme = "README.md"
 license = {text = "MIT"}