diff --git a/Dockerfile b/Dockerfile
index b4eebe6..5fc3120 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.24-alpine3.21 AS build
+FROM golang:1.24-alpine3.21@sha256:59a9237590705e00dd04bb43f9f75562caced1393b8767b4666a658daeb93e61 AS build
 
 WORKDIR /app
 
@@ -10,7 +10,7 @@ RUN go mod download -x
 COPY . .
 RUN CGO_ENABLED=0 go build -v
 
-FROM alpine:3.21
+FROM alpine:3.21@sha256:5405e8f36ce1878720f71217d664aa3dea32e5e5df11acbf07fc78ef5661465b
 
 RUN apk add --no-cache ca-certificates