diff --git a/Dockerfile b/Dockerfile
index c45fde6..41576cb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.23.2 as builder
+FROM golang:1.23.2@sha256:ad5c126b5cf501a8caef751a243bb717ec204ab1aa56dc41dc11be089fafcb4f as builder
 WORKDIR /src
 COPY * ./
 RUN go get