diff --git a/datasette/app.py b/datasette/app.py
index f3f0c387..7e2e6e4b 100644
--- a/datasette/app.py
+++ b/datasette/app.py
@@ -46,6 +46,11 @@ class BaseView(HTTPMethodView):
         self.page_size = datasette.page_size
         self.cache_headers = datasette.cache_headers
 
+    def options(self, request, *args, **kwargs):
+        r = response.text('ok')
+        r.headers['Access-Control-Allow-Origin'] = '*'
+        return r
+
     def redirect(self, request, path):
         if request.query_string:
             path = '{}?{}'.format(
@@ -53,6 +58,7 @@ class BaseView(HTTPMethodView):
             )
         r = response.redirect(path)
         r.headers['Link'] = '<{}>; rel=preload'.format(path)
+        r.headers['Access-Control-Allow-Origin'] = '*'
         return r
 
     async def pks_for_table(self, name, table):
diff --git a/datasette/utils.py b/datasette/utils.py
index c518bc53..ae8ad3a7 100644
--- a/datasette/utils.py
+++ b/datasette/utils.py
@@ -138,7 +138,7 @@ def make_dockerfile(files):
 FROM python:3
 COPY . /app
 WORKDIR /app
-RUN pip install https://static.simonwillison.net/static/2017/datasette-0.4-py3-none-any.whl
+RUN pip install https://static.simonwillison.net/static/2017/datasette-0.5-py3-none-any.whl
 RUN datasette build_metadata {} --metadata metadata.json
 EXPOSE 8006
 CMD ["datasette", "serve", {}, "--port", "8006", "--metadata", "metadata.json"]'''.format(
diff --git a/setup.py b/setup.py
index 2f89f6d9..e2e64999 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@ from setuptools import setup, find_packages
 
 setup(
     name='datasette',
-    version='0.4',
+    version='0.5',
     packages=find_packages(),
     package_data={'datasette': ['templates/*.html']},
     include_package_data=True,