diff --git a/docs/development.md b/docs/development.md
index 70742e7a9..1d2691abc 100644
--- a/docs/development.md
+++ b/docs/development.md
@@ -62,7 +62,7 @@ Then, go take a walk or something since it will be a while. When you are done, y
 * `ghcr.io/idaholab/malcolm/htadmin` (based on `debian:11-slim`)
 * `ghcr.io/idaholab/malcolm/logstash-oss` (based on `opensearchproject/logstash-oss-with-opensearch-output-plugin`)
 * `ghcr.io/idaholab/malcolm/netbox` (based on `netboxcommunity/netbox:latest`)
-* `ghcr.io/idaholab/malcolm/nginx-proxy` (based on `alpine:3.18`)
+* `ghcr.io/idaholab/malcolm/nginx-proxy` (based on `alpine:3.20`)
 * `ghcr.io/idaholab/malcolm/opensearch` (based on `opensearchproject/opensearch`)
 * `ghcr.io/idaholab/malcolm/pcap-capture` (based on `debian:12-slim`)
 * `ghcr.io/idaholab/malcolm/pcap-monitor` (based on `debian:12-slim`)