diff --git a/examples/deployment/docker/log_signer/Dockerfile b/examples/deployment/docker/log_signer/Dockerfile
index 6f5530c322..febb88f6d6 100644
--- a/examples/deployment/docker/log_signer/Dockerfile
+++ b/examples/deployment/docker/log_signer/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.21.4-bookworm@sha256:52362e252f452df17c24131b021bf2ebf1c9869f65c28f88ddb326191defea9c as build
+FROM golang:1.21.5-bookworm@sha256:a6b787c7f9046e3fdaa97bca1f76fd23ff4108f612de885e1af87e0dccc02f99 as build
 
 WORKDIR /trillian