diff --git a/examples/deployment/docker/log_server/Dockerfile b/examples/deployment/docker/log_server/Dockerfile
index aca44025f0..a26ed24374 100644
--- a/examples/deployment/docker/log_server/Dockerfile
+++ b/examples/deployment/docker/log_server/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.20.8-bookworm@sha256:b099af7250d673d249597b79049e3e53487c435acf285e07a36d4b49f9f4750a as build
+FROM golang:1.21.1-bookworm@sha256:d3114db136e7f2d9b08c3fcd374381ba3f8d85c17b80c48dbc53cd938cfb2b64 as build
 
 WORKDIR /trillian