diff --git a/integration/cloudbuild/testbase/Dockerfile b/integration/cloudbuild/testbase/Dockerfile
index bfc0d42b6e..53f7b311f7 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:1.21.6-bookworm@sha256:cbee5d27649be9e3a48d4d152838901c65d7f8e803f4cc46b53699dd215b555f
+FROM golang:1.21.6-bookworm@sha256:c4b696f1b2bf7d42e02b62b160c3f81c39386e1c567603df8c514ad6ce93361d
 
 WORKDIR /testbase