diff --git a/ansible/roles/gitea_runner/templates/docker-prune.service.j2 b/ansible/roles/gitea_runner/templates/docker-prune.service.j2
index 208c8c0..ce23d43 100644
--- a/ansible/roles/gitea_runner/templates/docker-prune.service.j2
+++ b/ansible/roles/gitea_runner/templates/docker-prune.service.j2
@@ -13,5 +13,8 @@ Environment=XDG_RUNTIME_DIR=/run/user/{{ gitea_runner_uid }}
 # them kills the active CI job and causes "RWLayer is unexpectedly nil" errors.
 ExecStart=/bin/sh -c 'docker ps -a --format "{% raw %}{{.ID}} {{.Names}}{% endraw %}" 2>/dev/null | grep -v "GITEA-ACTIONS-TASK" | awk "{print $1}" | xargs -r docker rm -f 2>/dev/null || true'
 ExecStart=/usr/bin/docker system prune -af --filter "until={{ gitea_runner_prune_until }}" --volumes
-ExecStart=/usr/bin/docker network prune -f
+# Prune networks older than the prune-until threshold to avoid removing
+# networks that molecule tests are actively creating (e.g. 'traefik' network
+# created during molecule create phase before containers are attached).
+ExecStart=/usr/bin/docker network prune -f --filter "until={{ gitea_runner_prune_until }}"
 ExecStart=/usr/bin/docker builder prune -f
diff --git a/ansible/roles/gitea_runner/templates/runner-healthcheck.sh.j2 b/ansible/roles/gitea_runner/templates/runner-healthcheck.sh.j2
index 2e4ba95..88ba20b 100644
--- a/ansible/roles/gitea_runner/templates/runner-healthcheck.sh.j2
+++ b/ansible/roles/gitea_runner/templates/runner-healthcheck.sh.j2
@@ -234,7 +234,10 @@ if [[ "$disk_pct" -ge {{ gitea_runner_healthcheck_disk_threshold }} ]]; then
         | awk '{print $1}' \
         | xargs -r docker rm -f 2>/dev/null || true
     docker system prune -af --filter "until=1h" --volumes || true
-    docker network prune -f || true
+    # Prune networks older than 1 hour to avoid removing networks that
+    # molecule tests are actively creating (e.g. 'traefik' network created
+    # during molecule create phase before containers are attached).
+    docker network prune -f --filter "until=1h" || true
     disk_pct=$(df -P / | awk 'NR==2 {gsub(/%/, "", $5); print $5}')
     echo "INFO: Disk usage after prune: ${disk_pct}%"
 fi