diff --git a/.travis.yml b/.travis.yml
index 1fa1df57..c18e895b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,6 +13,14 @@ matrix:
       python: 3.6
     - env: TOX_ENV=py36-no-ext
       python: 3.6
+    - env: TOX_ENV=py37
+      python: 3.7
+      dist: xenial
+      sudo: true
+    - env: TOX_ENV=py37-no-ext
+      python: 3.7
+      dist: xenial
+      sudo: true
     - env: TOX_ENV=flake8
       python: 3.6
     - env: TOX_ENV=check
diff --git a/requirements.txt b/requirements.txt
index b15a3572..05968bd8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,4 @@ aiofiles
 httptools
 ujson; sys_platform != "win32" and implementation_name == "cpython"
 uvloop; sys_platform != "win32" and implementation_name == "cpython"
-websockets>=4.0,<5.0
+websockets>=5.0,<6.0
diff --git a/sanic/server.py b/sanic/server.py
index 15ae4708..fc8291b5 100644
--- a/sanic/server.py
+++ b/sanic/server.py
@@ -665,7 +665,7 @@ def serve(host, port, request_handler, error_handler, before_start=None,
         for conn in connections:
             if hasattr(conn, "websocket") and conn.websocket:
                 coros.append(
-                    conn.websocket.close_connection(after_handshake=True)
+                    conn.websocket.close_connection()
                 )
             else:
                 conn.close()
diff --git a/sanic/worker.py b/sanic/worker.py
index 3d8a4617..d367a7c3 100644
--- a/sanic/worker.py
+++ b/sanic/worker.py
@@ -116,7 +116,7 @@ class GunicornWorker(base.Worker):
             for conn in self.connections:
                 if hasattr(conn, "websocket") and conn.websocket:
                     coros.append(
-                        conn.websocket.close_connection(after_handshake=False)
+                        conn.websocket.close_connection()
                     )
                 else:
                     conn.close()
diff --git a/setup.py b/setup.py
index 5954b926..73cb559f 100644
--- a/setup.py
+++ b/setup.py
@@ -60,7 +60,7 @@ requirements = [
     uvloop,
     ujson,
     'aiofiles>=0.3.0',
-    'websockets>=4.0,<5.0',
+    'websockets>=5.0,<6.0',
 ]
 if strtobool(os.environ.get("SANIC_NO_UJSON", "no")):
     print("Installing without uJSON")
diff --git a/tests/test_worker.py b/tests/test_worker.py
index af00982e..0dcd1f38 100644
--- a/tests/test_worker.py
+++ b/tests/test_worker.py
@@ -131,5 +131,5 @@ def test_worker_close(worker):
     loop.run_until_complete(_close)
 
     assert worker.signal.stopped == True
-    conn.websocket.close_connection.assert_called_with(after_handshake=False)
+    assert conn.websocket.close_connection.called == True
     assert len(worker.servers) == 0
diff --git a/tox.ini b/tox.ini
index a62368e2..cb8e4fc9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,11 +1,11 @@
 [tox]
-envlist = py35, py36, {py35,py36}-no-ext, flake8, check
+envlist = py35, py36, py37, {py35,py36,py37}-no-ext, flake8, check
 
 [testenv]
 usedevelop = True
 setenv =
-    {py35,py36}-no-ext: SANIC_NO_UJSON=1
-    {py35,py36}-no-ext: SANIC_NO_UVLOOP=1
+    {py35,py36,py37}-no-ext: SANIC_NO_UJSON=1
+    {py35,py36,py37}-no-ext: SANIC_NO_UVLOOP=1
 deps =
     coverage
     pytest==3.3.2