diff --git a/realms/__init__.py b/realms/__init__.py
index 8c4c571..ee4f6b2 100644
--- a/realms/__init__.py
+++ b/realms/__init__.py
@@ -180,9 +180,10 @@ def create_app(config=None):
 
     db.Model = declarative_base(metaclass=HookModelMeta, cls=HookMixin)
 
-    for status_code in httplib.responses:
-        if status_code >= 400:
-            app.register_error_handler(status_code, error_handler)
+    # TODO: This caused a crash with a more recent flask. Figure out what it does.
+    # for status_code in httplib.responses:
+    #     if status_code >= 400:
+    #         app.register_error_handler(status_code, error_handler)
 
     @app.before_request
     def init_g():
diff --git a/realms/modules/wiki/views.py b/realms/modules/wiki/views.py
index a5a2e40..87db1d3 100644
--- a/realms/modules/wiki/views.py
+++ b/realms/modules/wiki/views.py
@@ -11,7 +11,7 @@ blueprint = Blueprint('wiki', __name__)
 
 @blueprint.route("/_commit/<sha>/<path:name>")
 def commit(name, sha):
-    if current_app.config.get('PRIVATE_WIKI') and current_user.is_anonymous():
+    if current_app.config.get('PRIVATE_WIKI') and current_user.is_anonymous:
         return current_app.login_manager.unauthorized()
 
     cname = to_canonical(name)
@@ -26,7 +26,7 @@ def commit(name, sha):
 
 @blueprint.route(r"/_compare/<path:name>/<regex('\w+'):fsha><regex('\.{2,3}'):dots><regex('\w+'):lsha>")
 def compare(name, fsha, dots, lsha):
-    if current_app.config.get('PRIVATE_WIKI') and current_user.is_anonymous():
+    if current_app.config.get('PRIVATE_WIKI') and current_user.is_anonymous:
         return current_app.login_manager.unauthorized()
 
     diff = g.current_wiki.get_page(name, sha=lsha).compare(fsha)
@@ -41,7 +41,7 @@ def revert():
     commit = request.form.get('commit')
     message = request.form.get('message', "Reverting %s" % cname)
 
-    if not current_app.config.get('ALLOW_ANON') and current_user.is_anonymous():
+    if not current_app.config.get('ALLOW_ANON') and current_user.is_anonymous:
         return dict(error=True, message="Anonymous posting not allowed"), 403
 
     if cname in current_app.config.get('WIKI_LOCKED_PAGES'):
@@ -63,7 +63,7 @@ def revert():
 
 @blueprint.route("/_history/<path:name>")
 def history(name):
-    if current_app.config.get('PRIVATE_WIKI') and current_user.is_anonymous():
+    if current_app.config.get('PRIVATE_WIKI') and current_user.is_anonymous:
         return current_app.login_manager.unauthorized()
     return render_template('wiki/history.html', name=name)
 
@@ -165,7 +165,7 @@ def _tree_index(items, path=""):
 @blueprint.route("/_index", defaults={"path": ""})
 @blueprint.route("/_index/<path:path>")
 def index(path):
-    if current_app.config.get('PRIVATE_WIKI') and current_user.is_anonymous():
+    if current_app.config.get('PRIVATE_WIKI') and current_user.is_anonymous:
         return current_app.login_manager.unauthorized()
 
     items = g.current_wiki.get_index()
@@ -186,7 +186,7 @@ def page_write(name):
     if not cname:
         return dict(error=True, message="Invalid name")
 
-    if not current_app.config.get('ALLOW_ANON') and current_user.is_anonymous():
+    if not current_app.config.get('ALLOW_ANON') and current_user.is_anonymous:
         return dict(error=True, message="Anonymous posting not allowed"), 403
 
     if request.method == 'POST':
@@ -230,7 +230,7 @@ def page_write(name):
 @blueprint.route("/", defaults={'name': 'home'})
 @blueprint.route("/<path:name>")
 def page(name):
-    if current_app.config.get('PRIVATE_WIKI') and current_user.is_anonymous():
+    if current_app.config.get('PRIVATE_WIKI') and current_user.is_anonymous:
         return current_app.login_manager.unauthorized()
 
     cname = to_canonical(name)
diff --git a/realms/templates/layout.html b/realms/templates/layout.html
index 4eb1717..a8ee14c 100644
--- a/realms/templates/layout.html
+++ b/realms/templates/layout.html
@@ -58,7 +58,7 @@
               </div>
             </form>
             </li>
-            {% if current_user.is_authenticated() %}
+            {% if current_user.is_authenticated %}
               <li class="dropdown user-avatar">
                 <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                 <span>
@@ -109,7 +109,7 @@
       {% endfor %}
 
       var User = {};
-      User.is_authenticated = {{ current_user.is_authenticated()|tojson }};
+      User.is_authenticated = {{ current_user.is_authenticated|tojson }};
       {% for attr in ['username', 'email'] %}
         User.{{ attr }} = {{ current_user[attr]|tojson }};
       {% endfor %}
diff --git a/setup.py b/setup.py
index 82eada6..1c38485 100644
--- a/setup.py
+++ b/setup.py
@@ -23,14 +23,14 @@ setup(name='realms-wiki',
       version=__version__,
       packages=find_packages(),
       install_requires=[
-          'Flask==0.10.1',
-          'Flask-Assets==0.10',
+          'Flask==0.11.1',
+          'Flask-Assets==0.11',
           'Flask-Cache==0.13.1',
           'Flask-Elastic==0.2',
-          'Flask-Login==0.2.11',
-          'Flask-OAuthlib==0.9.1',
-          'Flask-SQLAlchemy==2.0',
-          'Flask-WTF==0.10.2',
+          'Flask-Login==0.3.2',
+          'Flask-OAuthlib==0.9.3',
+          'Flask-SQLAlchemy==2.1',
+          'Flask-WTF==0.12',
           'PyYAML==3.11',
           'bcrypt==1.0.2',
           'beautifulsoup4==4.3.2',