diff --git a/serving/samples/helloworld-python/Dockerfile b/serving/samples/helloworld-python/Dockerfile
index e0bfa7b31..831676420 100644
--- a/serving/samples/helloworld-python/Dockerfile
+++ b/serving/samples/helloworld-python/Dockerfile
@@ -8,11 +8,14 @@ WORKDIR $APP_HOME
 COPY . .
 
 # Install production dependencies.
-RUN pip install Flask
+RUN pip install Flask gunicorn
 
 # Service must listen to $PORT environment variable.
 # This default value facilitates local development.
 ENV PORT 8080
 
-# Run the web service on container startup.
-CMD ["python", "app.py"]
+# Run the web service on container startup. Here we use the gunicorn
+# webserver, with one worker process and 8 threads.
+# For environments with multiple CPU cores, increase the number of workers
+# to be equal to the cores available.
+CMD exec gunicorn --bind :$PORT --workers 1 --threads 8 app:app