diff --git a/docker/Dockerfile b/docker/Dockerfile
index d530b658ea..c294d0b12c 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
-ARG python_version=3.9.16
+ARG python_version=3.9.18
 FROM python:${python_version}-slim-bullseye AS build
 
 WORKDIR /src
diff --git a/docker/Dockerfile.indy b/docker/Dockerfile.indy
index 7ffcf56070..ac3ecd20a7 100644
--- a/docker/Dockerfile.indy
+++ b/docker/Dockerfile.indy
@@ -1,4 +1,4 @@
-ARG python_version=3.9.16
+ARG python_version=3.9.18
 ARG rust_version=1.46
 
 # This image could be replaced with an "indy" image from another repo,
diff --git a/docker/Dockerfile.test b/docker/Dockerfile.test
index 876a78df9e..94c05cfc8c 100644
--- a/docker/Dockerfile.test
+++ b/docker/Dockerfile.test
@@ -1,4 +1,4 @@
-ARG python_version=3.9.16
+ARG python_version=3.9.18
 FROM python:${python_version}-slim-bullseye
 
 RUN apt-get update -y && \