diff --git a/ci/rootfs/s390x-self-hosted-builder/README.md b/ci/rootfs/s390x-self-hosted-builder/README.md
index cfc1466..3e70ae8 100644
--- a/ci/rootfs/s390x-self-hosted-builder/README.md
+++ b/ci/rootfs/s390x-self-hosted-builder/README.md
@@ -36,6 +36,7 @@ $ sudo systemctl daemon-reload
 $ sudo tee /etc/actions-runner-libbpf
 repo=<owner>/<name>
 access_token=<ghp_***>
+runner_name=<hostname>
 ```
 
 Access token should have the repo scope, consult
diff --git a/ci/rootfs/s390x-self-hosted-builder/fs/usr/bin/actions-runner b/ci/rootfs/s390x-self-hosted-builder/fs/usr/bin/actions-runner
index c9d8227..8490703 100755
--- a/ci/rootfs/s390x-self-hosted-builder/fs/usr/bin/actions-runner
+++ b/ci/rootfs/s390x-self-hosted-builder/fs/usr/bin/actions-runner
@@ -7,7 +7,7 @@
 #
 # - repo=<owner>/<name>
 # - access_token=<ghp_***>
-#
+# - runner_name=<hostname>
 
 set -e -u
 
@@ -34,6 +34,7 @@ registration_token=$(jq --raw-output .token "$token_file")
     --url "https://github.com/$repo" \
     --token "$registration_token" \
     --labels z15 \
+    --name "$runner_name" \
     --ephemeral
 
 # Run one job.