diff --git a/ecg/analyze-keras.py b/ecg/analyze-keras.py
index 8b76fa73..f7124079 100644
--- a/ecg/analyze-keras.py
+++ b/ecg/analyze-keras.py
@@ -1,9 +1,18 @@
+from __future__ import print_function
+from __future__ import unicode_literals
+from __future__ import division
+from __future__ import absolute_import
+from builtins import zip
+from builtins import open
+from builtins import str
+from future import standard_library
+standard_library.install_aliases()
 import argparse
 import csv
 import json
 import os
 from tabulate import tabulate
-from io import StringIO
+from io import BytesIO
 
 
 def get_params_table(path, max_models=5):
@@ -13,7 +22,7 @@ def process_params(parameters):
             del parameters["FOLDER_TO_SAVE"]
         return parameters
 
-    output = StringIO()
+    output = BytesIO()
     first = True
     visited_dirs = {}
     for loss, _, dirpath in get_best_models(path):
diff --git a/ecg/data/irhythm/extract_data.py b/ecg/data/irhythm/extract_data.py
index acfcc17b..928ccb9e 100644
--- a/ecg/data/irhythm/extract_data.py
+++ b/ecg/data/irhythm/extract_data.py
@@ -1,6 +1,13 @@
 from __future__ import print_function
 from __future__ import division
-
+from __future__ import unicode_literals
+from __future__ import absolute_import
+
+from builtins import zip
+from builtins import int
+from builtins import range
+from future import standard_library
+standard_library.install_aliases()
 import collections
 import json
 import numpy as np
diff --git a/ecg/eval-keras.py b/ecg/eval-keras.py
index 71e987dd..1ab8c349 100644
--- a/ecg/eval-keras.py
+++ b/ecg/eval-keras.py
@@ -1,3 +1,12 @@
+from __future__ import print_function
+from __future__ import unicode_literals
+from __future__ import division
+from __future__ import absolute_import
+from builtins import range
+from builtins import open
+from builtins import str
+from future import standard_library
+standard_library.install_aliases()
 import argparse
 import numpy as np
 from sklearn.metrics import classification_report, confusion_matrix
diff --git a/ecg/loader.py b/ecg/loader.py
index 46865541..8787ecc4 100644
--- a/ecg/loader.py
+++ b/ecg/loader.py
@@ -1,3 +1,12 @@
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+from __future__ import absolute_import
+from builtins import dict
+from builtins import zip
+from builtins import range
+from future import standard_library
+standard_library.install_aliases()
 import argparse
 import collections
 import numpy as np
diff --git a/ecg/predict-keras.py b/ecg/predict-keras.py
index 1fe3a24a..b0c63790 100644
--- a/ecg/predict-keras.py
+++ b/ecg/predict-keras.py
@@ -1,3 +1,11 @@
+from __future__ import print_function
+from __future__ import unicode_literals
+from __future__ import division
+from __future__ import absolute_import
+from builtins import open
+from builtins import str
+from future import standard_library
+standard_library.install_aliases()
 import argparse
 import numpy as np
 from keras.models import load_model
diff --git a/ecg/train-keras.py b/ecg/train-keras.py
index d58025af..b754dc76 100644
--- a/ecg/train-keras.py
+++ b/ecg/train-keras.py
@@ -1,3 +1,13 @@
+from __future__ import print_function
+from __future__ import unicode_literals
+from __future__ import division
+from __future__ import absolute_import
+from builtins import open
+from builtins import int
+from builtins import str
+from future import standard_library
+standard_library.install_aliases()
+
 import argparse
 import numpy as np
 import json
@@ -36,7 +46,7 @@ def plot_model(model, start_time, net_type):
 def save_params(params, start_time, net_type):
     saving_filename = get_folder_name(start_time, net_type) + "/params.json"
     with open(saving_filename, 'w') as outfile:
-        json.dump(params, outfile)
+        outfile.write(unicode(json.dumps(params, ensure_ascii=False)))
 
 
 if __name__ == '__main__':
diff --git a/requirements.txt b/requirements.txt
index f9aaa231..a7429348 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,10 +1,14 @@
 cycler==0.10.0
 docopt==0.6.2
+funcsigs==1.0.2
+future==0.16.0
 h5py==2.6.0
 joblib==0.10.3
 Keras==1.2.0
+mock==2.0.0
 numpy==1.11.3
 pandas==0.19.2
+pbr==1.10.0
 pprint==0.1
 protobuf==3.1.0.post1
 pydot-ng==1.0.0
@@ -17,6 +21,6 @@ scipy==0.18.1
 six==1.10.0
 sklearn==0.0
 tabulate==0.7.7
-tensorflow==0.12.1
+tensorflow-gpu==0.12.1
 Theano==0.8.2
 tqdm==4.11.0