diff --git a/.travis.yml b/.travis.yml
index 6549b875..89843308 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,8 +15,8 @@ install: "pip install -r requirements.txt"
 
 before_script:
   - cd ..
-  - wget https://storage.googleapis.com/appengine-sdks/deprecated/195/google_appengine_1.9.5.zip -nv
-  - unzip -q google_appengine_1.9.5.zip
+  - wget https://storage.googleapis.com/appengine-sdks/featured/google_appengine_1.9.90.zip -nv
+  - unzip -q google_appengine_1.9.90.zip
   - export SDK_LOCATION="$(pwd)/google_appengine"
   - cd $TRAVIS_BUILD_DIR
   - git fetch --tags
diff --git a/app.yaml.template b/app.yaml.template
index 4dfff04b..35054755 100644
--- a/app.yaml.template
+++ b/app.yaml.template
@@ -26,6 +26,8 @@ handlers:
 
 libraries:
 - name: django
-  version: "1.3"
+  version: "1.11"
 - name: numpy
   version: "1.6.1"
+- name: ssl
+  version: "latest"
diff --git a/app/views.py b/app/views.py
index 5a3bae60..9809784a 100644
--- a/app/views.py
+++ b/app/views.py
@@ -1,17 +1,12 @@
 from django.http import HttpResponse, Http404
 from django.shortcuts import render_to_response, redirect
 from django.template.loader import render_to_string
-from django.utils import simplejson
 from django import forms
-import django
 
 from google.appengine.api import users
 from google.appengine.runtime import DeadlineExceededError
 
-import sympy
-from logic.utils import Eval
 from logic.logic import SymPyGamma, mathjax_latex
-from logic.resultsets import get_card, find_result_set
 
 import settings
 import models
@@ -127,6 +122,7 @@
     ]),
 ]
 
+
 class MobileTextInput(forms.widgets.TextInput):
     def render(self, name, value, attrs=None):
         if attrs is None:
@@ -135,9 +131,11 @@ def render(self, name, value, attrs=None):
         attrs['autocapitalize'] = 'off'
         return super(MobileTextInput, self).render(name, value, attrs)
 
+
 class SearchForm(forms.Form):
     i = forms.CharField(required=False, widget=MobileTextInput())
 
+
 def authenticate(view):
     def _wrapper(request, **kwargs):
         user = users.get_current_user()
@@ -157,6 +155,7 @@ def _wrapper(request, **kwargs):
         return template, params
     return _wrapper
 
+
 def app_version(view):
     def _wrapper(request, **kwargs):
         result = view(request, **kwargs)
@@ -173,6 +172,7 @@ def _wrapper(request, **kwargs):
             return result
     return _wrapper
 
+
 @app_version
 @authenticate
 def index(request, user):
@@ -279,19 +279,19 @@ def eval_card(request, card_name):
     except ValueError as e:
         return HttpResponse(json.dumps({
             'error': e.message
-        }), mimetype="application/json")
+        }), content_type="application/json")
     except DeadlineExceededError:
         return HttpResponse(json.dumps({
             'error': 'Computation timed out.'
-        }), mimetype="application/json")
+        }), content_type="application/json")
     except:
         trace = traceback.format_exc(5)
         return HttpResponse(json.dumps({
             'error': ('There was an error in Gamma. For reference'
                       'the last five traceback entries are: ' + trace)
-        }), mimetype="application/json")
+        }), content_type="application/json")
 
-    return HttpResponse(json.dumps(result), mimetype="application/json")
+    return HttpResponse(json.dumps(result), content_type="application/json")
 
 def get_card_info(request, card_name):
     g, variable, expression, _ = _process_card(request, card_name)
@@ -301,19 +301,19 @@ def get_card_info(request, card_name):
     except ValueError as e:
         return HttpResponse(json.dumps({
             'error': e.message
-        }), mimetype="application/json")
+        }), content_type="application/json")
     except DeadlineExceededError:
         return HttpResponse(json.dumps({
             'error': 'Computation timed out.'
-        }), mimetype="application/json")
+        }), content_type="application/json")
     except:
         trace = traceback.format_exc(5)
         return HttpResponse(json.dumps({
             'error': ('There was an error in Gamma. For reference'
                       'the last five traceback entries are: ' + trace)
-        }), mimetype="application/json")
+        }), content_type="application/json")
 
-    return HttpResponse(json.dumps(result), mimetype="application/json")
+    return HttpResponse(json.dumps(result), content_type="application/json")
 
 def get_card_full(request, card_name):
     g, variable, expression, parameters = _process_card(request, card_name)
@@ -339,10 +339,10 @@ def get_card_full(request, card_name):
                 'error': e.message
             },
             'input': expression
-        }), mimetype="text/html")
+        }), content_type="text/html")
     except DeadlineExceededError:
         return HttpResponse('Computation timed out.',
-                            mimetype="text/html")
+                            content_type="text/html")
     except:
         trace = traceback.format_exc(5)
         return HttpResponse(render_to_string('card.html', {
@@ -352,14 +352,15 @@ def get_card_full(request, card_name):
                 'error': trace
             },
             'input': expression
-        }), mimetype="text/html")
+        }), content_type="text/html")
 
-    response = HttpResponse(html, mimetype="text/html")
+    response = HttpResponse(html, content_type="text/html")
     response['Access-Control-Allow-Origin'] = '*'
     response['Access-Control-Allow-Headers'] = 'Content-Type, X-Requested-With'
 
     return response
 
+
 def remove_query(request, qid):
     user = users.get_current_user()
 
@@ -381,12 +382,14 @@ def remove_query(request, qid):
             'message': 'Not logged in or invalid user.'
         }
 
-    return HttpResponse(json.dumps(response), mimetype='application/json')
+    return HttpResponse(json.dumps(response), content_type='application/json')
+
 
 @app_version
 def view_404(request):
     return ("404.html", {})
 
+
 @app_version
 def view_500(request):
     return ("500.html", {})
diff --git a/main.py b/main.py
index 890b0d7b..5fd3bb28 100644
--- a/main.py
+++ b/main.py
@@ -7,6 +7,7 @@
 # Must set this env var *before* importing any part of Django
 os.environ['DJANGO_SETTINGS_MODULE'] = 'settings'
 
-import django.core.handlers.wsgi
+from django.core.wsgi import get_wsgi_application
+
+application = get_wsgi_application()
 
-application = django.core.handlers.wsgi.WSGIHandler()
diff --git a/requirements.txt b/requirements.txt
index c434f65c..b7d6a044 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-django==1.3
+django==1.11
 numpy==1.6.1
diff --git a/settings.py b/settings.py
index 5d7fda3e..78c5a6ad 100644
--- a/settings.py
+++ b/settings.py
@@ -2,7 +2,7 @@
 
 # root_dir points to this directory (that contains settings.py):
 import os
-root_dir = os.path.dirname(os.path.abspath(__file__))
+ROOT_DIR = os.path.abspath(os.path.dirname(__file__))
 
 DEBUG = False
 TEMPLATE_DEBUG = DEBUG
@@ -54,13 +54,6 @@
 # Make this unique, and don't share it with anybody.
 SECRET_KEY = '4v-c#usznhix_^np%w)4yr@dlit*4^47u@uph3xr2gh@7(&z$u'
 
-# List of callables that know how to import templates from various sources.
-TEMPLATE_LOADERS = (
-    'django.template.loaders.filesystem.load_template_source',
-    'django.template.loaders.app_directories.load_template_source',
-#     'django.template.loaders.eggs.load_template_source',
-)
-
 MIDDLEWARE_CLASSES = (
     'google.appengine.ext.ndb.django_middleware.NdbDjangoMiddleware',
     'django.middleware.common.CommonMiddleware',
@@ -70,9 +63,27 @@
 
 ROOT_URLCONF = 'urls'
 
-TEMPLATE_DIRS = (
-    root_dir + "/templates",
-)
+TEMPLATES = [{
+    'BACKEND': 'django.template.backends.django.DjangoTemplates',
+    'DIRS': [os.path.join(ROOT_DIR, 'templates')],
+    'OPTIONS': {
+        'loaders': [
+            ('django.template.loaders.cached.Loader', [
+                'django.template.loaders.filesystem.Loader',
+                'django.template.loaders.app_directories.Loader',
+            ]),
+        ],
+    },
+}]
+
+
+ALLOWED_HOSTS = [
+    '127.0.0.1',
+    'localhost',
+    '.sympygamma.com',
+    '.sympy.org',
+    '.appspot.com'
+]
 
 INSTALLED_APPS = (
         #'django.contrib.auth',
diff --git a/templates/base.html b/templates/base.html
index c08cb729..8f6722c9 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -64,7 +64,7 @@
         </p>
 
         <p>
-        &copy; 2013 SymPy Development Team. This project is
+        &copy; 2013-2020 SymPy Development Team. This project is
         open-source: <a href="https://github.com/sympy/sympy_gamma/">
             SymPy Gamma on Github</a>.
         </p>
diff --git a/urls.py b/urls.py
index 97c79d3e..305fbaf6 100644
--- a/urls.py
+++ b/urls.py
@@ -1,4 +1,6 @@
-from django.conf.urls.defaults import *
+from django.conf.urls import url
+
+from app import views
 
 # Uncomment the next two lines to enable the admin:
 # from django.contrib import admin
@@ -7,23 +9,22 @@
 import os.path
 p = os.path.join(os.path.dirname(__file__), 'media/')
 
-urlpatterns = patterns(
-    '',
+urlpatterns = [
     # Example:
     # (r'^notebook/', include('notebook.foo.urls')),
-    (r'^$', 'app.views.index'),
+    url(r'^$', views.index),
 
-    (r'^input/', 'app.views.input'),
-    (r'^about/$', 'app.views.about'),
-    (r'^random', 'app.views.random_example'),
+    url(r'^input/', views.input),
+    url(r'^about/$', views.about),
+    url(r'^random', views.random_example),
 
-    (r'user/remove/(?P<qid>.*)$', 'app.views.remove_query'),
+    url(r'user/remove/(?P<qid>.*)$', views.remove_query),
 
-    (r'card/(?P<card_name>\w*)$', 'app.views.eval_card'),
+    url(r'card/(?P<card_name>\w*)$', views.eval_card),
 
-    (r'card_info/(?P<card_name>\w*)$', 'app.views.get_card_info'),
+    url(r'card_info/(?P<card_name>\w*)$', views.get_card_info),
 
-    (r'card_full/(?P<card_name>\w*)$', 'app.views.get_card_full')
+    url(r'card_full/(?P<card_name>\w*)$', views.get_card_full)
 
 
     # Uncomment the admin/doc line below and add 'django.contrib.admindocs'
@@ -32,7 +33,7 @@
 
     # Uncomment the next line to enable the admin:
     # (r'^admin/(.*)', admin.site.root),
-)
+]
 
-handler404 = 'app.views.view_404'
-handler500 = 'app.views.view_500'
+handler404 = views.view_404
+handler500 = views.view_500