diff --git a/integration/Dockerfile b/integration/Dockerfile
index f7d58fdb14..48c29d75da 100644
--- a/integration/Dockerfile
+++ b/integration/Dockerfile
@@ -1,6 +1,6 @@
 # This Dockerfile builds a base image for the certificate-transparency-go CloudBuild integration testing.
 # See https://hub.docker.com/_/golang for the set of golang base images.
-FROM golang:1.22.2-bookworm@sha256:3451eec734d0d3d87ea6f240d6854dd71573801157b29fbd2adc359fd0fc714c as ct_testbase
+FROM golang:1.22.2-bookworm@sha256:b03f3ba515751657c75475b20941fef47341fccb3341c3c0b64283ff15d3fb46 as ct_testbase
 
 WORKDIR /testbase