diff --git a/abp/graphstate.py b/abp/graphstate.py
index e9f26d7..0e69a13 100755
--- a/abp/graphstate.py
+++ b/abp/graphstate.py
@@ -12,6 +12,7 @@ from . import qi, clifford, util
 import abp
 from .stabilizer import Stabilizer
 import requests
+import numpy as np
 from six.moves import range
 from six.moves import zip
 
@@ -504,7 +505,12 @@ class GraphState(object):
         if self.url == None:
             self.url = requests.get("https://abv.peteshadbolt.co.uk/").url
 
-        data = json.dumps(self.to_json(stringify=True))
+        def default(o):
+            if isinstance(o, np.int64):
+                return int(o)
+            raise TypeError
+
+        data = json.dumps(self.to_json(stringify=True), default=default)
         print(("Shared state to {}".format(self.url)))
         return requests.post("{}/graph".format(self.url), data=data)
 
diff --git a/examples/visualization/pull.py b/examples/visualization/pull.py
deleted file mode 100644
index 5dbc334..0000000
--- a/examples/visualization/pull.py
+++ /dev/null
@@ -1,8 +0,0 @@
-from __future__ import absolute_import
-from __future__ import print_function
-from abp import GraphState
-
-psi = GraphState()
-psi.pull("https://abv.peteshadbolt.co.uk/dakota-illinois-nuts-blue")
-print(psi)
-
diff --git a/examples/visualization/raussendorf.py b/examples/visualization/raussendorf.py
index a25a0e8..38d4143 100644
--- a/examples/visualization/raussendorf.py
+++ b/examples/visualization/raussendorf.py
@@ -19,7 +19,7 @@ raussendorf_unit_cell = (
      ((2, 1, 0), (2, 1, 1)), ((2, 0, 1), (2, 1, 1)),
      ((2, 1, 2), (2, 1, 1)), ((2, 2, 1), (2, 1, 1)),
      ((1, 0, 0), (1, 0, 1)), ((0, 0, 1), (1, 0, 1)),
-     ((1, 0, 2), (1, 0, 1)), ((2, 0, 1), (1, 0, 1)),  
+     ((1, 0, 2), (1, 0, 1)), ((2, 0, 1), (1, 0, 1)),
      ((1, 2, 0), (1, 2, 1)), ((0, 2, 1), (1, 2, 1)),
      ((1, 2, 2), (1, 2, 1)), ((2, 2, 1), (1, 2, 1)))
 
@@ -31,7 +31,8 @@ def add_offset(vector, offset):
 
 def offset_unit_cell(unit_cell, offset):
     """ Offset a unit cell """
-    return {(add_offset(a, offset), add_offset(b, offset)) for a, b in unit_cell}
+    return {(add_offset(a, offset), add_offset(b, offset))
+            for a, b in unit_cell}
 
 
 def lattice(unit_cell, size):
@@ -43,12 +44,13 @@ def lattice(unit_cell, size):
     nodes = set(itertools.chain(*edges))
     return nodes, edges
 
-nodes, edges = lattice(raussendorf_unit_cell, (2, 2, 3 ))
+
+nodes, edges = lattice(raussendorf_unit_cell, (2, 2, 3))
 
 psi = GraphState()
 for node in nodes:
     x, y, z = node
-    color = "red" if (x+y+z) % 2 > 0  else "black"
+    color = "red" if (x+y+z) % 2 > 0 else "black"
     psi.add_qubit(node, position=xyz(*node), color=color)
     psi.act_hadamard(node)
 
@@ -56,4 +58,3 @@ for edge in edges:
     psi.act_cz(edge[0], edge[1])
 
 psi.push()
-