diff --git a/invesalius/data/cy_my_types.pxd b/invesalius/data/cy_my_types.pxd
index f87d0b0..279edf8 100644
--- a/invesalius/data/cy_my_types.pxd
+++ b/invesalius/data/cy_my_types.pxd
@@ -13,4 +13,4 @@ ctypedef np.uint8_t mask_t
 
 ctypedef np.float32_t vertex_t
 ctypedef np.float32_t normal_t
-ctypedef np.int64_t vertex_id_t
+ctypedef np.int_t vertex_id_t
--
libgit2 0.21.2