diff --git a/packages/agoric-cli/docker/Dockerfile b/packages/agoric-cli/docker/Dockerfile
index f63dae1b924..513ed606225 100644
--- a/packages/agoric-cli/docker/Dockerfile
+++ b/packages/agoric-cli/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:stretch
+FROM debian:buster
 # MAINTAINER Tasos Latsas "tlatsas@kodama.gr"
 LABEL maintainer="mfig@agoric.com"
 
diff --git a/packages/cosmic-swingset/Dockerfile b/packages/cosmic-swingset/Dockerfile
index 401d445f80c..40c7449f35e 100644
--- a/packages/cosmic-swingset/Dockerfile
+++ b/packages/cosmic-swingset/Dockerfile
@@ -1,6 +1,6 @@
 # The Golang build container.
 # TODO This should be split out into the cosmos-connector.
-FROM golang:1.14-stretch
+FROM golang:1.14-buster
 
 WORKDIR /usr/src/app
 COPY go.mod go.sum ./
diff --git a/packages/cosmic-swingset/provisioning-server/Dockerfile b/packages/cosmic-swingset/provisioning-server/Dockerfile
index 46dddfd70d2..f2090da0e38 100644
--- a/packages/cosmic-swingset/provisioning-server/Dockerfile
+++ b/packages/cosmic-swingset/provisioning-server/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:stretch AS build
+FROM debian:buster AS build
 
 RUN apt-get update -y && apt-get install gcc python3 python3-venv python3-dev -y && apt-get clean -y
 
@@ -9,7 +9,7 @@ RUN ve3/bin/pip install wheel
 COPY . provisioning-server/
 RUN ve3/bin/pip install provisioning-server/
 
-FROM debian:stretch AS install
+FROM debian:buster AS install
 
 WORKDIR /usr/src/app
 RUN apt-get update -y && apt-get install python3 -y && apt-get clean -y
diff --git a/packages/deployment/Dockerfile b/packages/deployment/Dockerfile
index c13278c2dd8..62310673b85 100644
--- a/packages/deployment/Dockerfile
+++ b/packages/deployment/Dockerfile
@@ -1,6 +1,6 @@
 ARG TAG=latest
 ARG REPO=agoric/agoric-sdk
-FROM golang:stretch AS go-build
+FROM golang:buster AS go-build
 
 WORKDIR /usr/src/journalbeat
 RUN apt-get update -y && apt-get install -y libsystemd-dev
diff --git a/packages/deployment/Dockerfile.sdk b/packages/deployment/Dockerfile.sdk
index 07dd6b95b8f..83bb854e52e 100644
--- a/packages/deployment/Dockerfile.sdk
+++ b/packages/deployment/Dockerfile.sdk
@@ -3,7 +3,7 @@ ARG REPO=agoric/cosmic-swingset
 FROM $REPO:$SWINGSET_TAG as cosmic-swingset-go
 
 # The js build container
-FROM node:lts-stretch AS build-js
+FROM node:lts-buster AS build-js
 
 WORKDIR /usr/src/agoric-sdk
 COPY . .
@@ -18,7 +18,7 @@ RUN cd packages/cosmic-swingset && yarn build:gyp
 RUN yarn build
 
 # The install container.
-FROM node:lts-stretch AS install
+FROM node:lts-buster AS install
 
 # Install some conveniences.
 RUN apt-get update && apt-get install -y vim jq less && apt-get clean -y