diff --git a/Dockerfile b/Dockerfile
index 4dfc74e..3550526 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.13.14-alpine AS builder
+FROM docker.io/golang:1.13.14-alpine AS builder
 
 RUN apk --no-cache add \
     git \
@@ -11,7 +11,7 @@ WORKDIR $GOPATH/src/github.com/kelseyhightower/confd
 RUN git checkout v0.16.0
 RUN make
 
-FROM thallian/alpine-s6:latest
+FROM docker.io/thallian/alpine-s6:3.16
 
 COPY --from=builder /go/src/github.com/kelseyhightower/confd/bin/confd /bin/confd