diff --git a/bean/mapping/CRISPResso2Align.pyx b/bean/mapping/CRISPResso2Align.pyx
index eea6c60..73a16ed 100755
--- a/bean/mapping/CRISPResso2Align.pyx
+++ b/bean/mapping/CRISPResso2Align.pyx
@@ -16,7 +16,7 @@ cdef extern from "stdlib.h":
 cdef extern from "Python.h":
     ctypedef void PyObject
 
-ctypedef np.intp DTYPE_INT
+ctypedef np.npy_intp DTYPE_INT
 ctypedef np.int8_t DTYPE_BOOL
 
 cdef size_t UP = 1, LEFT = 2, DIAG = 3, NONE = 4