diff --git a/runtimes/python2/Dockerfile b/runtimes/python2/Dockerfile
index d4386aee..d1ea0b80 100644
--- a/runtimes/python2/Dockerfile
+++ b/runtimes/python2/Dockerfile
@@ -9,5 +9,5 @@ COPY . /app
 WORKDIR /app
 RUN pip install -r requirements.txt
 
-ENTRYPOINT ["python"]
+ENTRYPOINT ["python", "-u"]
 CMD ["server.py"]