diff --git a/Dockerfile b/Dockerfile
index b4eebe6..c9e7bfc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,7 +10,7 @@ RUN go mod download -x
 COPY . .
 RUN CGO_ENABLED=0 go build -v
 
-FROM alpine:3.21
+FROM alpine:3.23@sha256:865b95f46d98cf867a156fe4a135ad3fe50d2056aa3f25ed31662dff6da4eb62
 
 RUN apk add --no-cache ca-certificates