diff --git a/ziggurat/CHANGELOG.md b/ziggurat/CHANGELOG.md
index b17fd6e..9ddd580 100644
--- a/ziggurat/CHANGELOG.md
+++ b/ziggurat/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Changelog
 
+## 0.3.0
+
+ - Adds a `network_address` option to connect to the RCP over a raw TCP socket
+   (`tcp://host:port`, e.g. a network-attached RCP or a `ser2net`-style
+   serial-to-TCP bridge) instead of a local serial device. Wi-Fi-connected radios
+   are not recommended — see [zigpy/ziggurat#39](https://github.com/zigpy/ziggurat/pull/39).
+ - Targets the next zigpy/ziggurat release (past the current 0.1.0 on crates.io,
+   which predates the change above); the `ZIGGURAT_VERSION` build arg will need
+   confirming against whatever version is actually published.
+
 ## 0.2.0
 
  - Bump ziggurat to the 0.1.0 release on crates.io.
diff --git a/ziggurat/DOCS.md b/ziggurat/DOCS.md
index 734c28a..3cf1d10 100644
--- a/ziggurat/DOCS.md
+++ b/ziggurat/DOCS.md
@@ -17,29 +17,41 @@ losing the network.
 
 ## Installation
 
-1. Flash the radio with OpenThread RCP firmware (460800 baud, hardware flow control).
+1. Flash the radio with OpenThread RCP firmware (460800 or higher baud, hardware flow control).
 2. Install the app and select the radio under **Device**.
 3. Start the app.
 4. Configure ZHA with radio type `ziggurat` and device path
-   `socket://local_ziggurat:9999`. An existing EmberZNet or Z-Stack network can be
+   `ws://local-ziggurat:9999`. An existing EmberZNet or Z-Stack network can be
    migrated by restoring its network backup.
 
 ## Configuration
 
-### Option: `device` (required)
+### Option: `device`
 
-The serial port the 802.15.4 RCP radio is attached to.
+The serial port the 802.15.4 RCP radio is attached to. The add-on's configuration
+form requires a selection here even when using `network_address` — it won't validate
+otherwise — but the value is functionally ignored once `network_address` is set.
+Pick any attached serial device; it won't actually be used.
+
+### Option: `network_address`
+
+Connect to the RCP over a raw TCP socket instead of a local serial port, e.g.
+`tcp://192.168.1.50:6638` — for a network-attached RCP or a `ser2net`-style
+serial-to-TCP bridge. Takes priority over `device` when set. WiFi connected
+devices are not recommended.
 
 ### Option: `baudrate`
 
 The serial baudrate of the RCP firmware. The default (460800) matches the
-firmware shipped for the ZBT-1/ZBT-2.
+firmware shipped for the ZBT-1/ZBT-2. This setting is ignored if `network_address`
+is set.
 
 ### Option: `flow_control`
 
 The serial flow control mode (`hardware`, `software`, `none`). The RCP UART
 drops bytes under load without hardware flow control, corrupting frames; only
-change this if the radio's firmware was built without it.
+change this if the radio's firmware was built without it. This setting is ignored
+if `network_address` is set.
 
 ### Option: `log_level`
 
@@ -94,3 +106,8 @@ services:
 
 `--cap-add SYS_NICE` lets the stack raise its scheduling priority. It is optional but
 recommended.
+
+To connect to the RCP over TCP instead of a serial device, set
+`ZIGGURAT_NETWORK_ADDRESS` (e.g. `tcp://192.168.1.50:6638`) instead of
+`ZIGGURAT_DEVICE`; `--device` and the `devices:`/`--cap-add SYS_NICE` serial-port
+plumbing are then unnecessary.
diff --git a/ziggurat/Dockerfile b/ziggurat/Dockerfile
index 731bbc7..266c9bc 100644
--- a/ziggurat/Dockerfile
+++ b/ziggurat/Dockerfile
@@ -4,7 +4,12 @@ FROM rust:1-alpine AS builder
 
 RUN apk add --no-cache musl-dev
 
-ARG ZIGGURAT_VERSION=0.1.0
+# Targets the next zigpy/ziggurat release (the one including TCP RCP-transport
+# support, PR #39) rather than the current 0.1.0 on crates.io, which predates it.
+# zigpy/ziggurat's publish workflow stamps the crate version from the release tag at
+# publish time, not from its Cargo.toml, so the exact next version number is whatever
+# tag its maintainer cuts — confirm/adjust this before merging.
+ARG ZIGGURAT_VERSION=0.2.0
 
 ENV CARGO_PROFILE_RELEASE_LTO=true \
     CARGO_PROFILE_RELEASE_CODEGEN_UNITS=1 \
diff --git a/ziggurat/config.yaml b/ziggurat/config.yaml
index 024173d..97e8850 100644
--- a/ziggurat/config.yaml
+++ b/ziggurat/config.yaml
@@ -1,5 +1,5 @@
 ---
-version: 0.2.0
+version: 0.3.0
 slug: ziggurat
 name: Ziggurat Zigbee Server
 description: Open source host-side Zigbee stack written in Rust
@@ -16,11 +16,13 @@ privileged:
   - SYS_NICE
 options:
   device: null
+  network_address: null
   baudrate: 460800
   flow_control: hardware
   log_level: info
 schema:
-  device: device(subsystem=tty)
+  device: device(subsystem=tty)?
+  network_address: str?
   baudrate: int
   flow_control: list(hardware|software|none)
   log_level: list(error|warn|info|debug|trace)
diff --git a/ziggurat/rootfs/etc/s6-overlay/s6-rc.d/ziggurat/run b/ziggurat/rootfs/etc/s6-overlay/s6-rc.d/ziggurat/run
index bae1a91..70b1aa7 100755
--- a/ziggurat/rootfs/etc/s6-overlay/s6-rc.d/ziggurat/run
+++ b/ziggurat/rootfs/etc/s6-overlay/s6-rc.d/ziggurat/run
@@ -12,13 +12,17 @@ declare listen
 
 if bashio::fs.file_exists '/data/options.json'; then
     # Addon mode: Supervisor provides /data/options.json
-    device=$(bashio::config 'device')
+    if bashio::config.has_value 'network_address'; then
+        device=$(bashio::config 'network_address')
+    else
+        device=$(bashio::config 'device')
+    fi
     baudrate=$(bashio::config 'baudrate' '460800')
     flow_control=$(bashio::config 'flow_control' 'hardware')
     log_level=$(bashio::config 'log_level' 'info')
 else
     # Plain Docker mode: configuration comes from the environment variables
-    device="${ZIGGURAT_DEVICE}"
+    device="${ZIGGURAT_NETWORK_ADDRESS:-${ZIGGURAT_DEVICE}}"
     baudrate="${ZIGGURAT_BAUDRATE:-460800}"
     flow_control="${ZIGGURAT_FLOW_CONTROL:-hardware}"
     log_level="${ZIGGURAT_LOG_LEVEL:-info}"
diff --git a/ziggurat/translations/en.yaml b/ziggurat/translations/en.yaml
index 2aedf44..b44d2ac 100644
--- a/ziggurat/translations/en.yaml
+++ b/ziggurat/translations/en.yaml
@@ -2,16 +2,25 @@
 configuration:
   device:
     name: Device
-    description: The serial port where the OpenThread RCP radio is attached.
+    description: >-
+      The serial port where the OpenThread RCP radio is attached. Required by this
+      form even when Network Address is set (it won't validate otherwise), but the
+      value is ignored once Network Address is set — pick any attached device.
+  network_address:
+    name: Network Address
+    description: >-
+      Connect to the RCP over TCP instead of a local serial port, e.g.
+      tcp://192.168.1.50:6638. Takes priority over Device when set.
   baudrate:
     name: Baudrate
-    description: The serial baudrate of the RCP firmware.
+    description: >-
+      The serial baudrate of the RCP firmware. Ignored if Network Address is set.
   flow_control:
     name: Flow control
     description: >-
       The serial flow control mode. The RCP UART drops bytes under load without
       hardware flow control; only change this if the radio's firmware was built
-      without it.
+      without it. Ignored if Network Address is set.
   log_level:
     name: Log level
     description: >-