diff --git a/Dockerfile b/Dockerfile
index d349e3782bf6c9aaae046a881c03fc16ec6e0872..5ef4cf53d21e66e79360a10407a17be6f0271763 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 FROM ligo/base:stretch
 LABEL name="LIGO GraceDB Django application" \
       maintainer="tanner.prestegard@ligo.org" \
-      date="20190430"
+      date="20190920"
 ARG SETTINGS_MODULE="config.settings.container.dev"
 
 COPY docker/SWITCHaai-swdistrib.gpg /etc/apt/trusted.gpg.d
@@ -24,11 +24,10 @@ RUN apt-get update && \
         mariadb-client \
         nodejs \
         osg-ca-certs \
-        python2.7 \
-        python2.7-dev \
-        python-libxml2 \
-        python-pip \
-        python-voeventlib \
+        python3.5 \
+        python3.5-dev \
+        python3-libxml2 \
+        python3-pip \
         procps \
         shibboleth \
         supervisor \
@@ -61,11 +60,12 @@ ADD . /app/gracedb_project
 # install gracedb application itself
 WORKDIR /app/gracedb_project
 RUN bower install --allow-root
-RUN pip install --upgrade setuptools wheel && \
-    pip install -r requirements.txt
+RUN pip3 install --upgrade pip
+RUN pip3 install --upgrade setuptools wheel && \
+    pip3 install -r requirements.txt
 
 # Give pip-installed packages priority over distribution packages
-ENV PYTHONPATH /usr/local/lib/python2.7/dist-packages:$PYTHONPATH
+ENV PYTHONPATH /usr/local/lib/python3.5/dist-packages:$PYTHONPATH
 ENV ENABLE_SHIBD false
 ENV ENABLE_OVERSEER true
 ENV VIRTUAL_ENV dummy
@@ -97,7 +97,7 @@ RUN DJANGO_SETTINGS_MODULE=${SETTINGS_MODULE} \
     DJANGO_TWILIO_AUTH_TOKEN=fake_token \
     AWS_SES_ACCESS_KEY_ID=fake_aws_id \
     AWS_SES_SECRET_ACCESS_KEY=fake_aws_key \
-    python manage.py collectstatic --noinput
+    python3 manage.py collectstatic --noinput
 
 RUN rm -rf /app/logs/* /app/project_data/*
 
diff --git a/docker/check_shibboleth_status b/docker/check_shibboleth_status
index 0e30bfda2dc41c93f51fc9bebc366b2491280eca..71cfb0c0f0f3528be22dd1d4148796e4634b3e04 100644
--- a/docker/check_shibboleth_status
+++ b/docker/check_shibboleth_status
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python3
 
 '''
 Pulls Shibboleth status.sso page, checks for:
diff --git a/docker/cleanup b/docker/cleanup
index 5ccf6dc81ef6f894e315f6cc29fa92ca215ed645..13e6994f8522faafff7002f01724f538672166ed 100644
--- a/docker/cleanup
+++ b/docker/cleanup
@@ -1,5 +1,5 @@
 #!/bin/sh
 
-python /app/gracedb_project/manage.py update_user_accounts_from_ligo_ldap people
-python /app/gracedb_project/manage.py remove_inactive_alerts
-python /app/gracedb_project/manage.py clearsessions
+python3 /app/gracedb_project/manage.py update_user_accounts_from_ligo_ldap people
+python3 /app/gracedb_project/manage.py remove_inactive_alerts
+python3 /app/gracedb_project/manage.py clearsessions
diff --git a/docker/entrypoint b/docker/entrypoint
index 9d8be7681826d0029095ddf2cd16ce16fdf1b769..ccc39280859aaacd71ea9bc0753b415cb492d04c 100644
--- a/docker/entrypoint
+++ b/docker/entrypoint
@@ -1,4 +1,4 @@
 #!/bin/bash
 
-export LVALERT_OVERSEER_RESOURCE=${LVALERT_USER}_overseer_$(python  -c 'import uuid; print(uuid.uuid4().hex)')
+export LVALERT_OVERSEER_RESOURCE=${LVALERT_USER}_overseer_$(python3  -c 'import uuid; print(uuid.uuid4().hex)')
 exec "$@"