--- a/src/if_python3.c
+++ b/src/if_python3.c
@@ -160,6 +160,7 @@
 # define PyMapping_Keys py3_PyMapping_Keys
 # define PyIter_Next py3_PyIter_Next
 # define PyObject_GetIter py3_PyObject_GetIter
+# define PyObject_Repr py3_PyObject_Repr
 # define PyObject_GetItem py3_PyObject_GetItem
 # define PyObject_IsTrue py3_PyObject_IsTrue
 # define PyModule_GetDict py3_PyModule_GetDict
@@ -211,6 +212,8 @@
 # define PyType_Type (*py3_PyType_Type)
 # define PySlice_Type (*py3_PySlice_Type)
 # define PyFloat_Type (*py3_PyFloat_Type)
+# define PyNumber_Check (*py3_PyNumber_Check)
+# define PyNumber_Long (*py3_PyNumber_Long)
 # define PyBool_Type (*py3_PyBool_Type)
 # define PyErr_NewException py3_PyErr_NewException
 # ifdef Py_DEBUG
@@ -310,6 +313,7 @@ static PyObject* (*py3_PyLong_FromLong)(
 static PyObject* (*py3_PyDict_New)(void);
 static PyObject* (*py3_PyIter_Next)(PyObject *);
 static PyObject* (*py3_PyObject_GetIter)(PyObject *);
+static PyObject* (*py3_PyObject_Repr)(PyObject *);
 static PyObject* (*py3_PyObject_GetItem)(PyObject *, PyObject *);
 static int (*py3_PyObject_IsTrue)(PyObject *);
 static PyObject* (*py3_Py_BuildValue)(char *, ...);
@@ -365,6 +369,8 @@ static PyTypeObject* py3_PyType_Type;
 static PyTypeObject* py3_PySlice_Type;
 static PyTypeObject* py3_PyFloat_Type;
 static PyTypeObject* py3_PyBool_Type;
+static int (*py3_PyNumber_Check)(PyObject *);
+static PyObject* (*py3_PyNumber_Long)(PyObject *);
 static PyObject* (*py3_PyErr_NewException)(char *name, PyObject *base, PyObject *dict);
 static PyObject* (*py3_PyCapsule_New)(void *, char *, PyCapsule_Destructor);
 static void* (*py3_PyCapsule_GetPointer)(PyObject *, char *);
@@ -399,6 +405,7 @@ static PyObject *p3imp_PyExc_TypeError;
 static PyObject *p3imp_PyExc_ValueError;
 static PyObject *p3imp_PyExc_RuntimeError;
 static PyObject *p3imp_PyExc_ImportError;
+static PyObject *p3imp_PyExc_OverflowError;
 
 # define PyExc_AttributeError p3imp_PyExc_AttributeError
 # define PyExc_IndexError p3imp_PyExc_IndexError
@@ -408,6 +415,7 @@ static PyObject *p3imp_PyExc_ImportError
 # define PyExc_ValueError p3imp_PyExc_ValueError
 # define PyExc_RuntimeError p3imp_PyExc_RuntimeError
 # define PyExc_ImportError p3imp_PyExc_ImportError
+# define PyExc_OverflowError p3imp_PyExc_OverflowError
 
 /*
  * Table of name to function pointer of python.
@@ -469,6 +477,7 @@ static struct
     {"PyMapping_Keys", (PYTHON_PROC*)&py3_PyMapping_Keys},
     {"PyIter_Next", (PYTHON_PROC*)&py3_PyIter_Next},
     {"PyObject_GetIter", (PYTHON_PROC*)&py3_PyObject_GetIter},
+    {"PyObject_Repr", (PYTHON_PROC*)&py3_PyObject_Repr},
     {"PyObject_GetItem", (PYTHON_PROC*)&py3_PyObject_GetItem},
     {"PyObject_IsTrue", (PYTHON_PROC*)&py3_PyObject_IsTrue},
     {"PyLong_FromLong", (PYTHON_PROC*)&py3_PyLong_FromLong},
@@ -518,6 +527,8 @@ static struct
     {"PySlice_Type", (PYTHON_PROC*)&py3_PySlice_Type},
     {"PyFloat_Type", (PYTHON_PROC*)&py3_PyFloat_Type},
     {"PyBool_Type", (PYTHON_PROC*)&py3_PyBool_Type},
+    {"PyNumber_Check", (PYTHON_PROC*)&py3_PyNumber_Check},
+    {"PyNumber_Long", (PYTHON_PROC*)&py3_PyNumber_Long},
     {"PyErr_NewException", (PYTHON_PROC*)&py3_PyErr_NewException},
 # ifdef Py_DEBUG
     {"_Py_NegativeRefcount", (PYTHON_PROC*)&py3__Py_NegativeRefcount},
@@ -672,6 +683,7 @@ get_py3_exceptions()
     p3imp_PyExc_ValueError = PyDict_GetItemString(exdict, "ValueError");
     p3imp_PyExc_RuntimeError = PyDict_GetItemString(exdict, "RuntimeError");
     p3imp_PyExc_ImportError = PyDict_GetItemString(exdict, "ImportError");
+    p3imp_PyExc_OverflowError = PyDict_GetItemString(exdict, "OverflowError");
     Py_XINCREF(p3imp_PyExc_AttributeError);
     Py_XINCREF(p3imp_PyExc_IndexError);
     Py_XINCREF(p3imp_PyExc_KeyError);
@@ -680,6 +692,7 @@ get_py3_exceptions()
     Py_XINCREF(p3imp_PyExc_ValueError);
     Py_XINCREF(p3imp_PyExc_RuntimeError);
     Py_XINCREF(p3imp_PyExc_ImportError);
+    Py_XINCREF(p3imp_PyExc_OverflowError);
     Py_XDECREF(exmod);
 }
 #endif /* DYNAMIC_PYTHON3 */