diff --git a/pyopencl/_cffi.py b/pyopencl/_cffi.py
index b6a25e45ade7a18fc6bec11337f8f838a2aa1dcd..edabae9dc2e86147066a11579232cfd184795b74 100644
--- a/pyopencl/_cffi.py
+++ b/pyopencl/_cffi.py
@@ -115,6 +115,8 @@ typedef struct _cl_mem_ion_host_ptr {
     void*                ion_hostptr;
 } cl_mem_ion_host_ptr;
 
+typedef cl_bitfield         cl_mem_migration_flags_ext;
+
 /* c++ class pointer */
 typedef struct clbase *clobj_t;
 """