diff --git a/docker/Dockerfile b/docker/Dockerfile
index 166e7b159e..ecbffe5b24 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
-ARG python_version=3.6.13
+ARG python_version=3.9.16
 FROM python:${python_version}-slim-bullseye AS build
 
 WORKDIR /src
diff --git a/docker/Dockerfile.indy b/docker/Dockerfile.indy
index 93649df4ef..e4c4959cd4 100644
--- a/docker/Dockerfile.indy
+++ b/docker/Dockerfile.indy
@@ -1,4 +1,4 @@
-ARG python_version=3.6.13
+ARG python_version=3.9.16
 ARG rust_version=1.46
 
 # This image could be replaced with an "indy" image from another repo,