diff --git a/docs/source/markdown/podman-systemd.unit.5.md b/docs/source/markdown/podman-systemd.unit.5.md
index e6272cea9a..1612a7381d 100644
--- a/docs/source/markdown/podman-systemd.unit.5.md
+++ b/docs/source/markdown/podman-systemd.unit.5.md
@@ -805,7 +805,8 @@ Exposes a port, or a range of ports (e.g. `50-59`), from the container to the ho
 to the Podman `--publish` option. The format is similar to the Podman options, which is of
 the form `ip:hostPort:containerPort`, `ip::containerPort`, `hostPort:containerPort` or
 `containerPort`, where the number of host and container ports must be the same (in the case
-of a range).
+of a range). The protocol can be provided at the end, e.g., `hostPort:containerPort/tcp`.
+Valid protocols are `tcp` and `udp`; the `sctp` protocol is supported only for rootful containers.
 
 If the IP is set to 0.0.0.0 or not set at all, the port is bound on all IPv4 addresses on
 the host; use [::] for IPv6.
@@ -1193,7 +1194,8 @@ Exposes a port, or a range of ports (e.g. `50-59`), from the pod to the host. Eq
 to the Podman `--publish` option. The format is similar to the Podman options, which is of
 the form `ip:hostPort:containerPort`, `ip::containerPort`, `hostPort:containerPort` or
 `containerPort`, where the number of host and container ports must be the same (in the case
-of a range).
+of a range). The protocol can be provided at the end, e.g., `hostPort:containerPort/tcp`.
+Valid protocols are `tcp` and `udp`; the `sctp` protocol is supported only for rootful containers.
 
 If the IP is set to 0.0.0.0 or not set at all, the port is bound on all IPv4 addresses on
 the host; use [::] for IPv6.
@@ -1380,7 +1382,8 @@ Exposes a port, or a range of ports (e.g. `50-59`), from the container to the ho
 to the `podman kube play`'s `--publish` option. The format is similar to the Podman options, which is of
 the form `ip:hostPort:containerPort`, `ip::containerPort`, `hostPort:containerPort` or
 `containerPort`, where the number of host and container ports must be the same (in the case
-of a range).
+of a range). The protocol can be provided at the end, e.g., `hostPort:containerPort/tcp`.
+Valid protocols are `tcp` and `udp`; the `sctp` protocol is supported only for rootful containers.
 
 If the IP is set to 0.0.0.0 or not set at all, the port is bound on all IPv4 addresses on
 the host; use [::] for IPv6.