diff --git a/src/future/utils/__init__.py b/src/future/utils/__init__.py
index 59920077..7282a9cf 100644
--- a/src/future/utils/__init__.py
+++ b/src/future/utils/__init__.py
@@ -473,7 +473,7 @@ def raise_from(exc, cause):
             e.__suppress_context__ = True
         elif isinstance(cause, BaseException):
             e.__cause__ = cause
-            e.__cause__.__traceback__ = sys.exc_info()[2]
+            object.__setattr__(e.__cause__,  '__traceback__', sys.exc_info()[2])
             e.__suppress_context__ = True
         else:
             raise TypeError("exception causes must derive from BaseException")