diff --git a/Dockerfile b/Dockerfile
index d262670..1e8558b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,6 +7,7 @@ RUN CGO_ENABLED=0 go build -ldflags "-s -w"
 FROM alpine:3.7
 LABEL maintainer="cuigh <noname@live.com>"
 WORKDIR /app
+RUN apk add --no-cache ca-certificates
 COPY --from=build /go/src/github.com/cuigh/swirl/swirl .
 COPY --from=build /go/src/github.com/cuigh/swirl/config ./config/
 COPY --from=build /go/src/github.com/cuigh/swirl/assets ./assets/