diff --git a/pepperboard/__init__.py b/pepperboard/__init__.py
index b4c4472..c53f601 100755
--- a/pepperboard/__init__.py
+++ b/pepperboard/__init__.py
@@ -1,2 +1,2 @@
-#!/usr/bin/env python
-# -*- coding:utf-8 -*-
\ No newline at end of file
+#!/usr/bin/env python3
+# -*- coding:utf-8 -*-
diff --git a/pepperboard/core/__init__.py b/pepperboard/core/__init__.py
index 39a05ae..2228db5 100644
--- a/pepperboard/core/__init__.py
+++ b/pepperboard/core/__init__.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 import getopt
@@ -13,15 +13,15 @@
 
 
 def usage():
-    print "USAGE: " + sys.argv[0] + " [OPTIONS]"
-    print "Pepperboard : neat and simple salt dashboards"
-    print "--help|-h : Prints an awesome help message"
-    print "--output=|-o : comma separated values of files to write dashboards given with the \"-d\" argument"
-    print "--dashboards=|-d : comma separated values of dashboards"
-    print "--threads=|-t : comma separated values of threads count to be used (must be greater than 0). Prefix the number by \"f\" if you want more threads than CPU core count"
-    print "--grains=|-g : comma separated values of grains to be used with the mgrains dashboard. This argument implies \"-d 'mgrains'\""
-    print "--dellapikey=|-a : Dell API key used by the dellwarranty dashboard. This argument implies \"-d 'mgrains'\""
-    print "--list|-l : List available dashboards"
+    print("USAGE: " + sys.argv[0] + " [OPTIONS]")
+    print("Pepperboard : neat and simple salt dashboards")
+    print("--help|-h : Prints an awesome help message")
+    print("--output=|-o : comma separated values of files to write dashboards given with the \"-d\" argument")
+    print("--dashboards=|-d : comma separated values of dashboards")
+    print("--threads=|-t : comma separated values of threads count to be used (must be greater than 0). Prefix the number by \"f\" if you want more threads than CPU core count")
+    print("--grains=|-g : comma separated values of grains to be used with the mgrains dashboard. This argument implies \"-d 'mgrains'\"")
+    print("--dellapikey=|-a : Dell API key used by the dellwarranty dashboard. This argument implies \"-d 'mgrains'\"")
+    print("--list|-l : List available dashboards")
 
 
 def getmasterstatus():
@@ -44,17 +44,17 @@ def countminions():
 
 def pepper_main():
     if getmasterstatus() == 1:
-        print "Error : Your Salt Master isn't running. Exiting..."
+        print("Error : Your Salt Master isn't running. Exiting...")
         usage()
         sys.exit(2)
 
     if countminions() == 0:
-        print "Error : You don't have any minions registered to the Salt Master. Exiting..."
+        print("Error : You don't have any minions registered to the Salt Master. Exiting...")
         usage()
         sys.exit(2)
 
     if not sys.argv[1:]:
-        print "Error : Pepperboard wrongly called"
+        print("Error : Pepperboard wrongly called")
         usage()
         sys.exit(2)
 
@@ -62,7 +62,7 @@ def pepper_main():
         opts, args = getopt.getopt(sys.argv[1:], 'o:d:t:g:a:lh',
                                    ['output=', 'dashboards=', 'threads=', 'grains=', 'dellapikey=', 'list', 'help'])
     except getopt.GetoptError as err:
-        print str(err)
+        print(str(err))
         usage()
         sys.exit(2)
 
@@ -78,14 +78,14 @@ def pepper_main():
     for o, a in opts:
         if o in ("-o", "--output"):
             if not a:
-                print "Error : missing output file"
+                print("Error : missing output file")
                 usage()
                 sys.exit(2)
             else:
                 outputs = a.split(',')
         elif o in ("-t", "--threads"):
             if not a:
-                print "Error : Missing thread number"
+                print("Error : Missing thread number")
                 usage()
                 sys.exit(2)
             else:
@@ -99,28 +99,28 @@ def pepper_main():
                         except ImportError:
                             raise ImportError("You need psutil python module")
                         if int(th) > cpu_count(logical=True):
-                            print "Error : threads count cannot be greater than CPU core count unless you force it with \"f\" before the number"
+                            print("Error : threads count cannot be greater than CPU core count unless you force it with \"f\" before the number")
                             sys.exit(2)
                         elif int(th) == 0:
-                            print "Error : threads count must be greater than 0"
+                            print("Error : threads count must be greater than 0")
                             usage()
                             sys.exit(2)
                         else:
                             nthreads.append(int(th))
         elif o in ("-d", "--dashboards"):
             if not a:
-                print "Error : Missing dashboards list"
+                print("Error : Missing dashboards list")
                 usage()
                 sys.exit(2)
             else:
                 dashs = a.split(',')
                 for dash in dashs:
                     if dash not in available_dashboards:
-                        print "Error : Dashboard " + dash + " not available."
+                        print("Error : Dashboard " + dash + " not available.")
                         sys.exit(2)
         elif o in ("-g", "--grains"):
             if not a:
-                print "Error : mgrains argument must be a CSV list"
+                print("Error : mgrains argument must be a CSV list")
                 usage()
                 sys.exit(2)
             else:
@@ -129,7 +129,7 @@ def pepper_main():
                 grains = a.split(',')
         elif o in ("-a", "--dellapikey"):
             if not a:
-                print "Error : dellapikey argument can't be empty"
+                print("Error : dellapikey argument can't be empty")
                 usage()
                 sys.exit(2)
             else:
@@ -137,36 +137,36 @@ def pepper_main():
                     dashs.append("dellwarranty")
                 dellapikey = a
         elif o in ("-l", "--list"):
-            print "\n".join(available_dashboards)
+            print("\n".join(available_dashboards))
         elif o in ("-h", "--help"):
             usage()
             sys.exit(0)
         else:
-            print "Unhandled option"
+            print("Unhandled option")
 
     if 'mgrains' in dashs and len(grains) == 0:
-        print "Error : You must the grains list when using the mgrains dashboard"
+        print("Error : You must the grains list when using the mgrains dashboard")
         sys.exit(2)
 
     if 'dellwarranty' in dashs and not dellapikey:
-        print "Error : You must set the dellapikey when using the dellwarranty dashboard"
+        print("Error : You must set the dellapikey when using the dellwarranty dashboard")
         sys.exit(2)
 
     if len(nthreads) == 0:
         if not len(outputs) == len(dashs):
-            print "Error : All lists aren't the same size"
+            print("Error : All lists aren't the same size")
             sys.exit(2)
         else:
             for dash, out in zip(dashs, outputs):
                 if dash == 'mgrains':
-                    pepperboard.dashboards.gendashboard(dash, out, None, grains)
+                    pepperboard.dashboards.gendashboard(dash, out, input=grains)
                 elif dash == 'dellwarranty':
-                    pepperboard.dashboards.gendashboard(dash, out, None, dellapikey)
+                    pepperboard.dashboards.gendashboard(dash, out, input=dellapikey)
                 else:
                     pepperboard.dashboards.gendashboard(dash, out)
     else:
         if not len(outputs) == len(nthreads) == len(dashs):
-            print "Error : All lists aren't the same size"
+            print("Error : All lists aren't the same size")
             sys.exit(2)
         else:
             for dash, out, nth in zip(dashs, outputs, nthreads):
diff --git a/pepperboard/dashboards/__init__.py b/pepperboard/dashboards/__init__.py
index 8e8debb..3356482 100644
--- a/pepperboard/dashboards/__init__.py
+++ b/pepperboard/dashboards/__init__.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 import importlib
@@ -14,7 +14,7 @@ def gendashboard(ident, output, nthreads=None, input=None):
     elif "gendash" in dir(mod):
         mod.gendash(output, nthreads)
     else:
-        print "Error : gendata() or gendash() methods not found in "+mod.__name__
+        print("Error : gendata() or gendash() methods not found in "+mod.__name__)
         sys.exit(2)
 
 
@@ -35,7 +35,7 @@ def gentable(input, output):
     for header in input['headers']:
         foutput.write('<th>'+header+'</th>')
     foutput.write('</tr></thead><tbody>\n')
-    for k, v in input['data'].iteritems():
+    for k, v in input['data'].items():
         if input['ncol'] == 2:
             foutput.write('<tr><td valign=\"top\">'+str(k)+'</td><td>')
             if isinstance(v,dict):
diff --git a/pepperboard/dashboards/dellwarranty.py b/pepperboard/dashboards/dellwarranty.py
index 43389d9..ce2cc15 100644
--- a/pepperboard/dashboards/dellwarranty.py
+++ b/pepperboard/dashboards/dellwarranty.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 
diff --git a/pepperboard/dashboards/highstates.py b/pepperboard/dashboards/highstates.py
index 799bfc9..209a9a3 100644
--- a/pepperboard/dashboards/highstates.py
+++ b/pepperboard/dashboards/highstates.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 
@@ -24,7 +24,7 @@ def simhighstate(server):
         if server in hst:
             minionos = c.cmd(server, 'grains.items')[server]['os'].lower()
             if isinstance(hst[server], dict):
-                for k, v in hst[server].iteritems():
+                for k, v in hst[server].items():
                     if not v['result']:
                         tbc.append("<li>" + v['name'] + "</li>")
                 processedserver.append(server)
@@ -60,7 +60,7 @@ def simhighstate(server):
     )
     foutput.write('<script src=\"//www.kryogenix.org/code/browser/sorttable/sorttable.js\"></script>')
     foutput.write('<style>table.sortable th:not(.sorttable_sorted):not(.sorttable_sorted_reverse):not(.sorttable_nosort):after {content: \" \\25B4\\25BE\"}')
-    for os, logo in core.logos.iteritems():
+    for os, logo in core.logos.items():
         foutput.write('#'+os+'{background:url(data:image/png;base64,'+logo+') left no-repeat;height:20px;width:20px;float:left;padding-right:5px}')
     foutput.write('</style>')
     foutput.write('<link rel=\"stylesheet\" href=\"//yui-s.yahooapis.com/pure/0.6.0/pure-min.css\">')
diff --git a/pepperboard/dashboards/mgrains.py b/pepperboard/dashboards/mgrains.py
index 45eb160..6b9b8e6 100644
--- a/pepperboard/dashboards/mgrains.py
+++ b/pepperboard/dashboards/mgrains.py
@@ -1,21 +1,23 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
+import sys
+import concurrent.futures
+import salt.client
+import salt.runner
+import collections
+import warnings
+
 
 def gendata(grains, nthreads):
-    import sys
-    import concurrent.futures
-    import salt.client
-    import salt.runner
-    import collections
-    import warnings
+
     warnings.simplefilter("ignore", DeprecationWarning)
     result = {}
     toreturn = {}
     if nthreads is None:
         nthreads = 8
     if grains is None:
-        print "Error : Grains must be specified"
+        print("Error : Grains must be specified")
         sys.exit(2)
 
     def getgrainscontent(grains, server):
diff --git a/pepperboard/dashboards/upgrades.py b/pepperboard/dashboards/upgrades.py
index db96ff3..f011c0a 100644
--- a/pepperboard/dashboards/upgrades.py
+++ b/pepperboard/dashboards/upgrades.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 
@@ -35,7 +35,7 @@ def checkupdates(server):
                         len(upd[
                                 server])) + '</a><div class=\"pkglist\" id=\"' + server + '\" style=\"display:none\"><ul>' + ''.join(
                         ['<li>{} : {}</li>'.format(k, v) for k, v in
-                         collections.OrderedDict(sorted(upd[server].items())).iteritems()]) + '</ul></div>'
+                         collections.OrderedDict(sorted(upd[server].items())).items()]) + '</ul></div>'
                 result[server] = '<tr><td valign=\"top\">' + displogo + server + '</td><td>' + displaypkgs + '</td></tr>\n'
             else:
                 result[server] = '<tr><td valign=\"top\">' + displogo + server + '</td><td>Error during upgrades retrieveing (' + upd[server] + ')</td></tr>\n'
@@ -55,7 +55,7 @@ def checkupdates(server):
     )
     foutput.write('<script src=\"//www.kryogenix.org/code/browser/sorttable/sorttable.js\"></script>')
     foutput.write('<style>table.sortable th:not(.sorttable_sorted):not(.sorttable_sorted_reverse):not(.sorttable_nosort):after {content: \" \\25B4\\25BE\"}')
-    for os, logo in core.logos.iteritems():
+    for os, logo in core.logos.items():
         foutput.write('#'+os+'{background:url(data:image/png;base64,'+logo+') left no-repeat;height:20px;width:20px;float:left;padding-right:5px}')
     foutput.write('</style>')
     foutput.write('<link rel=\"stylesheet\" href=\"//yui-s.yahooapis.com/pure/0.6.0/pure-min.css\">')
diff --git a/requirements.txt b/requirements.txt
index 93ab576..530f436 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,2 @@
-futures>=3
 psutil
-salt
\ No newline at end of file
+salt
diff --git a/scripts/pepperboard b/scripts/pepperboard
index 26e0f1d..d6e02e4 100644
--- a/scripts/pepperboard
+++ b/scripts/pepperboard
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 from pepperboard import core
diff --git a/setup.py b/setup.py
index 75bc6ce..5dab747 100644
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 from setuptools import setup
@@ -8,11 +8,11 @@
 
 setup(
     name='pepperboard',
-    version='2.4',
+    version='3.0',
     packages=['pepperboard', 'pepperboard.core', 'pepperboard.dashboards'],
     scripts=['scripts/pepperboard'],
     url='https://github.com/webedia-dev/pepperboard',
-    download_url='https://github.com/webedia-dev/pepperboard/releases/tag/v2.4',
+    download_url='https://github.com/webedia-dev/pepperboard/releases/tag/v3.0',
     license='Apache',
     author='Cyril LAVIER',
     author_email='cyril.lavier@webedia-group.com',
@@ -22,9 +22,9 @@
         'Development Status :: 5 - Production/Stable',
         'Intended Audience :: System Administrators',
         'Natural Language :: English',
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.5',
         'License :: OSI Approved :: Apache Software License',
         'Topic :: System :: Monitoring',
     ],
-)
\ No newline at end of file
+)