diff --git a/scikits/image/graph/heap.pyx b/scikits/image/graph/heap.pyx
index 272fa15b..2345f2f9 100644
--- a/scikits/image/graph/heap.pyx
+++ b/scikits/image/graph/heap.pyx
@@ -35,7 +35,7 @@ from __future__ import division
 
 # cython specific imports
 import cython
-from stdlib cimport malloc, free
+from libc.stdlib cimport malloc, free
 
 cdef extern from "pyport.h":
   double Py_HUGE_VAL
diff --git a/scikits/image/opencv/opencv_backend.pyx b/scikits/image/opencv/opencv_backend.pyx
index 4f9cbd6d..dd45a56a 100644
--- a/scikits/image/opencv/opencv_backend.pyx
+++ b/scikits/image/opencv/opencv_backend.pyx
@@ -1,7 +1,7 @@
 import ctypes
 import numpy as np
 cimport numpy as np
-from python cimport *
+from cpython cimport *
 from opencv_constants import *
 from opencv_type cimport *
 from _libimport import cv, cxcore
diff --git a/scikits/image/opencv/opencv_cv.pyx b/scikits/image/opencv/opencv_cv.pyx
index 4448716c..c728eeb7 100644
--- a/scikits/image/opencv/opencv_cv.pyx
+++ b/scikits/image/opencv/opencv_cv.pyx
@@ -5,8 +5,8 @@ import ctypes
 cimport numpy as np
 import numpy as np
 
-from python cimport *
-from stdlib cimport *
+from cpython cimport *
+from libc.stdlib cimport *
 from opencv_type cimport *
 from opencv_backend import *
 from opencv_backend cimport *