diff --git a/examples/deployment/docker/db_server/postgresql/Dockerfile b/examples/deployment/docker/db_server/postgresql/Dockerfile
index df528d091e..0c40b34076 100644
--- a/examples/deployment/docker/db_server/postgresql/Dockerfile
+++ b/examples/deployment/docker/db_server/postgresql/Dockerfile
@@ -1,4 +1,4 @@
-FROM postgres:17.2@sha256:994cc3113ce004ae73df11f0dbc5088cbe6bb0da1691dd7e6f55474202a4f211
+FROM postgres:17.2@sha256:fe4efc6901dda0d952306fd962643d8022d7bb773ffe13fe8a21551b9276e50c
 
 # expects the build context to be: $GOPATH/src/github.com/google/trillian
 COPY storage/postgresql/schema/storage.sql /docker-entrypoint-initdb.d/storage.sql
diff --git a/examples/deployment/docker/envsubst/Dockerfile b/examples/deployment/docker/envsubst/Dockerfile
index cba835f9d4..a291e1686b 100644
--- a/examples/deployment/docker/envsubst/Dockerfile
+++ b/examples/deployment/docker/envsubst/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.20@sha256:1e42bbe2508154c9126d48c2b8a75420c3544343bf86fd041fb7527e017a4b4a
+FROM alpine:3.21@sha256:21dc6063fd678b478f57c0e13f47560d0ea4eeba26dfc947b2a4f81f686b9f45
 
 RUN apk add --no-cache gettext
 
diff --git a/examples/deployment/docker/log_server/Dockerfile b/examples/deployment/docker/log_server/Dockerfile
index 1f6e739f84..284d628eaa 100644
--- a/examples/deployment/docker/log_server/Dockerfile
+++ b/examples/deployment/docker/log_server/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.23.3-bookworm@sha256:3f3b9daa3de608f3e869cd2ff8baf21555cf0fca9fd34251b8f340f9b7c30ec5 as build
+FROM golang:1.23.4-bookworm@sha256:ef30001eeadd12890c7737c26f3be5b3a8479ccdcdc553b999c84879875a27ce as build
 
 WORKDIR /trillian
 
diff --git a/examples/deployment/docker/log_signer/Dockerfile b/examples/deployment/docker/log_signer/Dockerfile
index acc8f4a3c2..56ad0c885a 100644
--- a/examples/deployment/docker/log_signer/Dockerfile
+++ b/examples/deployment/docker/log_signer/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.23.3-bookworm@sha256:3f3b9daa3de608f3e869cd2ff8baf21555cf0fca9fd34251b8f340f9b7c30ec5 as build
+FROM golang:1.23.4-bookworm@sha256:ef30001eeadd12890c7737c26f3be5b3a8479ccdcdc553b999c84879875a27ce as build
 
 WORKDIR /trillian
 
diff --git a/integration/cloudbuild/testbase/Dockerfile b/integration/cloudbuild/testbase/Dockerfile
index 9a7c917b70..53a5102a50 100644
--- a/integration/cloudbuild/testbase/Dockerfile
+++ b/integration/cloudbuild/testbase/Dockerfile
@@ -1,5 +1,5 @@
 # This Dockerfile builds a base image for Trillan integration tests.
-FROM golang:1.23.3-bookworm@sha256:3f3b9daa3de608f3e869cd2ff8baf21555cf0fca9fd34251b8f340f9b7c30ec5
+FROM golang:1.23.4-bookworm@sha256:ef30001eeadd12890c7737c26f3be5b3a8479ccdcdc553b999c84879875a27ce
 
 WORKDIR /testbase