diff --git a/CHANGELOG.md b/CHANGELOG.md
index e5a71b9..157cc3c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+- `MemorError` class
 ### Changed
 - `LLMModel` enum updated
 ## [1.1] - 2025-12-23
diff --git a/memor/__init__.py b/memor/__init__.py
index b0fe844..4deef82 100644
--- a/memor/__init__.py
+++ b/memor/__init__.py
@@ -6,6 +6,6 @@
 from .prompt import Prompt, Role
 from .response import Response
 from .session import Session
-from .errors import MemorRenderError, MemorValidationError
+from .errors import MemorError, MemorRenderError, MemorValidationError
 
 __version__ = MEMOR_VERSION
diff --git a/memor/errors.py b/memor/errors.py
index 7baab2b..f915de9 100644
--- a/memor/errors.py
+++ b/memor/errors.py
@@ -1,14 +1,18 @@
 # -*- coding: utf-8 -*-
 """Memor errors."""
 
+class MemorError(Exception):
+    """Base class for all errors in Memor."""
 
-class MemorValidationError(ValueError):
+    pass
+
+class MemorValidationError(MemorError, ValueError):
     """Base class for validation errors in Memor."""
 
     pass
 
 
-class MemorRenderError(Exception):
+class MemorRenderError(MemorError):
     """Base class for render error in Memor."""
 
     pass