diff --git a/lsio/endlessh/docker-compose.yaml b/lsio/endlessh/docker-compose.yaml
index c564c0f..7719ac4 100644
--- a/lsio/endlessh/docker-compose.yaml
+++ b/lsio/endlessh/docker-compose.yaml
@@ -25,6 +25,8 @@ services:
       - MAXCLIENTS=4096 # optional
       # By default, the app logs to container log. If this is set to `true`, the log will be output to file under `/config/logs/endlessh` (`/config` needs to be mapped).
       - LOGFILE=false # optional
+      # By default, the app binds to IPv4 and IPv6 addresses. Set it to `4` or `6` to bind to IPv4 only or IPv6 only, respectively. Leave blank to bind to both.
+      - BINDFAMILY= # optional
     volumes:
       # Required if `LOGFILE` is set to `true`.
       - ${BASEDIR:-/volume1/docker}/endlessh/config:/config # optional
diff --git a/lsio/endlessh/docker-run.sh b/lsio/endlessh/docker-run.sh
index c8decd6..bb9b403 100644
--- a/lsio/endlessh/docker-run.sh
+++ b/lsio/endlessh/docker-run.sh
@@ -14,6 +14,7 @@ docker run -d \
   -e MAXLINES=32 `# optional` `# The length of each line is randomized. This controls the maximum length of each line. Shorter lines may keep clients on for longer if they give up after a certain number of bytes.` \
   -e MAXCLIENTS=4096 `# optional` `# Maximum number of connections to accept at a time. Connections beyond this are not immediately rejected, but will wait in the queue.` \
   -e LOGFILE=false `# optional` `# By default, the app logs to container log. If this is set to `true`, the log will be output to file under `/config/logs/endlessh` (`/config` needs to be mapped).` \
+  -e BINDFAMILY= `# optional` `# By default, the app binds to IPv4 and IPv6 addresses. Set it to `4` or `6` to bind to IPv4 only or IPv6 only, respectively. Leave blank to bind to both.` \
   -p 22:2222 `# ssh port` \
   -v ${BASEDIR:-/volume1/docker}/endlessh/config:/config `# optional` `# Required if `LOGFILE` is set to `true`.` \
   --restart unless-stopped \