diff --git a/04-Application/Dockerfile b/04-Application/Dockerfile
index 8a28341..d687592 100644
--- a/04-Application/Dockerfile
+++ b/04-Application/Dockerfile
@@ -1,4 +1,4 @@
-FROM public.ecr.aws/docker/library/golang:1.20 AS builder
+FROM public.ecr.aws/docker/library/golang:1.26@sha256:313faae491b410a35402c05d35e7518ae99103d957308e940e1ae2cfa0aac29b AS builder
 WORKDIR /app
 
 COPY go.* .