diff --git a/Dockerfile b/Dockerfile
index cccfbf8..e6f945c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -23,7 +23,7 @@ COPY ./pkg ./pkg
 RUN go install ./cmd/network-health-server
 
 # production image ############################################
-FROM alpine:3.17.3@sha256:124c7d2707904eea7431fffe91522a01e5a861a624ee31d03372cc1d138a3126 AS prod
+FROM alpine:3.18.3@sha256:7144f7bab3d4c2648d7e59409f15ec52a18006a128c733fcff20d3a4a54ba44a AS prod
 RUN apk add --no-cache ca-certificates
 
 COPY --from=build-env /go/bin/network-health-client /bin/network-health-client