diff --git a/Python/exceptions.c b/Python/exceptions.c
index ef9d01c..4d17529 100644
--- a/Python/exceptions.c
+++ b/Python/exceptions.c
@@ -97,6 +97,7 @@
  |    |    |\n\
  |    |    +-- UnicodeError\n\
  |    |\n\
+ |    +-- ReferenceError\n\
  |    +-- SystemError\n\
  |    +-- MemoryError\n\
  |\n\
@@ -889,6 +890,9 @@
 the Python version, and the hardware/OS platform and version.";
 
 static char
+ReferenceError__doc__[] = "Weak ref proxy used after referent went away.";
+
+static char
 MemoryError__doc__[] = "Out of memory.";
 
 static char
@@ -956,6 +960,7 @@
 PyObject *PyExc_SyntaxError;
 PyObject *PyExc_IndentationError;
 PyObject *PyExc_TabError;
+PyObject *PyExc_ReferenceError;
 PyObject *PyExc_SystemError;
 PyObject *PyExc_SystemExit;
 PyObject *PyExc_UnboundLocalError;
@@ -1044,6 +1049,7 @@
   FloatingPointError__doc__},
  {"ValueError",   &PyExc_ValueError,  0, ValueError__doc__},
  {"UnicodeError", &PyExc_UnicodeError, &PyExc_ValueError, UnicodeError__doc__},
+ {"ReferenceError",  &PyExc_ReferenceError, 0, ReferenceError__doc__},
  {"SystemError",  &PyExc_SystemError, 0, SystemError__doc__},
  {"MemoryError",  &PyExc_MemoryError, 0, MemoryError__doc__},
  /* Warning categories */