diff --git a/arctic/serialization/numpy_arrays.py b/arctic/serialization/numpy_arrays.py
index 711c9571..2844493e 100644
--- a/arctic/serialization/numpy_arrays.py
+++ b/arctic/serialization/numpy_arrays.py
@@ -116,7 +116,14 @@ def docify(self, df):
                 dtypes[str(c)] = arr.dtype.str
                 if mask is not None:
                     masks[str(c)] = Binary(compress(mask.tostring()))
-                arrays.append(arr.tostring())
+                # try:
+                #     serialized = arr.tostring()
+                # except:
+                #     import pickle
+                #     pickle.dumps(arr, protocol=4)
+                import pickle
+                serialized = pickle.dumps(arr)
+                arrays.append(serialized)
             except Exception as e:
                 typ = infer_dtype(df[c], skipna=False)
                 msg = "Column '{}' type is {}".format(str(c), typ)
@@ -154,7 +161,11 @@ def objify(self, doc, columns=None):
             else:
                 d = decompress(doc[DATA][doc[METADATA][LENGTHS][col][0]: doc[METADATA][LENGTHS][col][1] + 1])
                 # d is ready-only but that's not an issue since DataFrame will copy the data anyway.
-                d = np.frombuffer(d, doc[METADATA][DTYPE][col])
+                try:
+                    import pickle
+                    d = pickle.loads(d)
+                except:
+                    d = np.frombuffer(d, doc[METADATA][DTYPE][col])
 
                 if MASK in doc[METADATA] and col in doc[METADATA][MASK]:
                     mask_data = decompress(doc[METADATA][MASK][col])
diff --git a/arctic/store/_pandas_ndarray_store.py b/arctic/store/_pandas_ndarray_store.py
index 6903bfee..14ce8558 100644
--- a/arctic/store/_pandas_ndarray_store.py
+++ b/arctic/store/_pandas_ndarray_store.py
@@ -217,7 +217,8 @@ class PandasPanelStore(PandasDataFrameStore):
 
     @staticmethod
     def can_write_type(data):
-        return isinstance(data, Panel)
+        pass
+        # return isinstance(data, Panel)
 
     def can_write(self, version, symbol, data):
         if self.can_write_type(data):
diff --git a/setup.py b/setup.py
index a31553f9..c60e489a 100644
--- a/setup.py
+++ b/setup.py
@@ -77,7 +77,7 @@ def run_tests(self):
                       "enum-compat",
                       "futures; python_version == '2.7'",
                       "mockextras",
-                      "pandas<=1.0.3",
+                      # "pandas<=1.0.3",
                       "pymongo>=3.6.0",
                       "python-dateutil",
                       "pytz",