diff --git a/5-infrastructure/modules/app_cicd_pipeline/cloud-build-builder/Dockerfile b/5-infrastructure/modules/app_cicd_pipeline/cloud-build-builder/Dockerfile
index e9ad1d33..ee48fc83 100644
--- a/5-infrastructure/modules/app_cicd_pipeline/cloud-build-builder/Dockerfile
+++ b/5-infrastructure/modules/app_cicd_pipeline/cloud-build-builder/Dockerfile
@@ -25,7 +25,7 @@ RUN make out/signer
 RUN cp out/signer /signer
 
 
-FROM alpine:3.13
+FROM alpine:3.23
 
 ### 1. Get Java via the package manager
 RUN apk update \