diff --git a/integration/cloudbuild/testbase/Dockerfile b/integration/cloudbuild/testbase/Dockerfile
index 0a1129c5e2..13a17f00be 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:1.22.5-bookworm@sha256:6c2780255bb7b881e904e303be0d7a079054160b2ce1efde446693c0850a39ad
+FROM golang:1.22.5-bookworm@sha256:af9b40f2b1851be993763b85288f8434af87b5678af04355b1e33ff530b5765f
 
 WORKDIR /testbase