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+% podman-system-migrate(1)
+
+## NAME
+podman\-system\-migrate - Migrate existing containers to a new podman version
+
+## SYNOPSIS
+** podman system migrate**
+
+## DESCRIPTION
+** podman system migrate** migrates containers to the latest podman version.
+
+**podman system migrate** takes care of migrating existing containers to the latest version of podman if any change is necessary.
+
+"Rootless Podman uses a pause process to keep the unprivileged
+namespaces alive. This prevents any change to the `/etc/subuid` and
+`/etc/subgid` files from being propagated to the rootless containers
+while the pause process is running.
+
+For these changes to be propagated, it is necessary to first stop all
+running containers associated with the user and to also stop the pause
+process and delete its pid file.  Instead of doing it manually, `podman
+system migrate` can be used to stop both the running containers and the
+pause process. The `/etc/subuid` and `/etc/subgid` files can then be
+edited or changed with usermod to recreate the user namespace with the
+newly configured mappings.
+
+## OPTIONS
+
+**--new-runtime**=*runtime*
+
+Set a new OCI runtime for all containers.
+This can be used after a system upgrade which changes the default OCI runtime to move all containers to the new runtime.
+There are no guarantees that the containers will continue to work under the new runtime, as some runtimes support differing options and configurations.
+
+## SYNOPSIS
+**podman system migrate**
+
+## SEE ALSO
+`podman(1)`, `libpod.conf(5)`, `usermod(8)`
+
+## HISTORY
+April 2019, Originally compiled by Giuseppe Scrivano (gscrivan at redhat dot com)