diff --git a/Dockerfile b/Dockerfile
index b4eebe6..b7edf2a 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@sha256:51183f2cfa6320055da30872f211093f9ff1d3cf06f39a0bdb212314c5dc7375
 
 RUN apk add --no-cache ca-certificates