diff --git a/Dockerfile b/Dockerfile
index a8a0b18..c124d82 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # STEP 1 build executable binary
-FROM golang:1.17.3-alpine3.13@sha256:07674a997a6ece514c1397c44b1d6cc45b9ade6ba9acb1d3c6072537c4cf82f1 AS builder
+FROM golang:1.17.3-alpine3.13@sha256:33c95bc78fa434bae90c45d04e5a02612492acbb7118f35538a56ee0646c1bb7 AS builder
 
 ENV MORTY_VERSION="f5bff1e285d3f973cacf73318e55175edafd633f"
 
@@ -13,7 +13,7 @@ RUN apk upgrade --no-cache && \
 RUN go get -d -v && gofmt -l ./ && go build .
 
 # STEP 2 build the image including only the binary
-FROM alpine:3.14.2@sha256:e1c082e3d3c45cccac829840a25941e679c25d438cc8412c2fa221cf1a824e6a
+FROM alpine:3.14.3@sha256:635f0aa53d99017b38d1a0aa5b2082f7812b03e3cdb299103fe77b5c8a07f1d2
 
 RUN apk upgrade --no-cache && \
     apk --no-cache add ca-certificates && \