diff --git a/c7n-mailer/Dockerfile b/c7n-mailer/Dockerfile
index c3d42c8d..1112661c 100644
--- a/c7n-mailer/Dockerfile
+++ b/c7n-mailer/Dockerfile
@@ -1,5 +1,5 @@
 # FROM python:3.8.7-alpine3.11
-FROM python:3.7-slim
+FROM python:3.10-slim
 
 # renovate: datasource=github-releases depName=cloud-custodian/cloud-custodian
 ARG PACKAGE_VERSION=0.9.1.0
diff --git a/cloudmapper/Dockerfile b/cloudmapper/Dockerfile
index 94b0a359..f8df8c1d 100644
--- a/cloudmapper/Dockerfile
+++ b/cloudmapper/Dockerfile
@@ -1,5 +1,5 @@
 # https://github.com/duo-labs/cloudmapper
-FROM python:3.7-slim as cloudmapper
+FROM python:3.10-slim as cloudmapper
 
 # LABEL maintainer="https://github.com/0xdabbad00/"
 # LABEL Project="https://github.com/duo-labs/cloudmapper"