diff --git a/dkim/__init__.py b/dkim/__init__.py
index fba63b5..9109d32 100644
--- a/dkim/__init__.py
+++ b/dkim/__init__.py
@@ -46,6 +46,7 @@ from dkim.util import (
     )
 
 __all__ = [
+    "DKIMException",
     "InternalError",
     "KeyFormatError",
     "MessageFormatError",