diff --git a/website/app.yaml b/website/app.yaml
index 9484a911..92e2fbf8 100644
--- a/website/app.yaml
+++ b/website/app.yaml
@@ -1,14 +1,15 @@
 application: python-tornado
 version: 2
-runtime: python
+runtime: python27
+threadsafe: yes
 api_version: 1
 
 handlers:
 - url: /static/tornado-0.1.tar.gz
-  script: website.py
+  script: website.application
 
 - url: /static/tornado-0.2.tar.gz
-  script: website.py
+  script: website.application
 
 - url: /static/
   static_dir: static
@@ -22,10 +23,10 @@ handlers:
   upload: static/favicon.ico
 
 - url: /documentation/?
-  script: website.py
+  script: website.application
 
 - url: /documentation
   static_dir: sphinx/build/html
 
 - url: /.*
-  script: website.py
+  script: website.application