diff --git a/Dockerfile b/Dockerfile
index c5971477ef8e..306ad65399cb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -45,7 +45,7 @@ RUN gulp dist
 
 # Now we're going to build our actual application, but not the actual production
 # image that it gets deployed into.
-FROM python:3.7.3-slim-stretch as build
+FROM python:3.7.11-slim-stretch as build
 
 # Define whether we're building a production or a development image. This will
 # generally be used to control whether or not we install our development and
@@ -121,7 +121,7 @@ RUN set -x \
 
 # Now we're going to build our actual application image, which will eventually
 # pull in the static files that were built above.
-FROM python:3.7.3-slim-stretch
+FROM python:3.7.11-slim-stretch
 
 # Setup some basic environment variables that are ~never going to change.
 ENV PYTHONUNBUFFERED 1