diff --git a/datasette/cli.py b/datasette/cli.py
index ccac5a74..3381dc88 100644
--- a/datasette/cli.py
+++ b/datasette/cli.py
@@ -73,10 +73,6 @@ def publish(publisher, files, name, metadata, extra_options, force, **extra_meta
     elif publisher == 'heroku':
         # FIXME: need to verify we have heroku, heroku-builds, and are logged in (ugh)
         with temporary_heroku_directory(files, name, metadata, extra_options, extra_metadata):
-            # build(files) doesn't work, dunno why
-            app = Datasette(files)
-            open("inspect-data.json", 'w').write(json.dumps(app.inspect(), indent=2))
-
             create_output = check_output(['heroku', 'apps:create', '--json'])
             app_name = json.loads(create_output)["name"]
             call(["heroku", "builds:create", "-a", app_name])
diff --git a/datasette/utils.py b/datasette/utils.py
index fcccf0b8..825a794e 100644
--- a/datasette/utils.py
+++ b/datasette/utils.py
@@ -229,6 +229,8 @@ def temporary_heroku_directory(files, name, metadata, extra_options, extra_metad
 
         open('runtime.txt', 'w').write('python-3.6.2')
         open('requirements.txt', 'w').write('datasette')
+        os.mkdir('bin')
+        open('bin/post_compile', 'w').write('datasette build --inspect-file inspect-data.json')
 
         quoted_files = " ".join(map(shlex.quote, files))
         procfile_cmd = f'web: datasette serve --host 0.0.0.0 {quoted_files} --cors --port $PORT --inspect-file inspect-data.json'