diff --git a/compose.yml b/compose.yml
index 51d1591..b4f8435 100644
--- a/compose.yml
+++ b/compose.yml
@@ -44,7 +44,7 @@ services:
     # Our nagios.cfg/cgi.cfg + generated config validate cleanly on this version
     # (verified via `nagios -v`). Note: build-8 was intentionally avoided — it is
     # the one build in this series missing `bind-tools`, which breaks check_dns.
-    image: docker.io/manios/nagios:build-37
+    image: docker.io/manios/nagios:build-38
     restart: unless-stopped
     ports:
     - "${NAGIOS_HTTP_BIND_ADDRESS}:80"