diff --git a/srcpkgs/mirrorbits/template b/srcpkgs/mirrorbits/template
index 886d6d76121..8d1d6163d83 100644
--- a/srcpkgs/mirrorbits/template
+++ b/srcpkgs/mirrorbits/template
@@ -1,23 +1,36 @@
 # Template file for 'mirrorbits'
 pkgname=mirrorbits
-version=0.4
-revision=2
+version=0.5.1
+revision=1
 build_style=go
 go_import_path="github.com/etix/mirrorbits"
-# from Makefile
-# we use tarball, so no
 go_ldflags="-X ${go_import_path}/core.VERSION=${VERSION}"
-hostmakedepends="govendor git pkg-config"
+_go_protobuf_version=52132540909e117f2b98b0694383dc0ab1e1deca
+hostmakedepends="govendor git pkg-config protobuf-devel"
 makedepends="geoip-devel"
 depends="geoip-data redis"
 short_desc="Geographical download redirector"
 maintainer="lemmi <lemmi@nerd2nerd.org>"
 license="MIT"
 homepage="https://github.com/etix/mirrorbits"
-distfiles="https://github.com/etix/mirrorbits/archive/v0.4.tar.gz"
-checksum=4da8f19aae0e63befe53370c9922cb91a656459e7607f8f1b42be07c789e37a0
+distfiles="
+ https://github.com/etix/mirrorbits/archive/v${version}.tar.gz
+ https://github.com/golang/protobuf/archive/${_go_protobuf_version}.tar.gz"
+checksum="
+ c713c312877aa039415b1f336bf8ca456aa3089a5759c9e6aa9aac8853e165fb
+ 5ef8723453af0aeea20f7b6f322345c009560ec23b85d430838bfb5d2f1cde4a"
+patch_args="-Np1"
 
 pre_build() {
+	# Build the protoc-gen-go Protobuf plugin.
+	mkdir -p "${GOPATH}/src/github.com/golang"
+	ln -s "${XBPS_BUILDDIR}/protobuf-${_go_protobuf_version}" "${GOPATH}/src/github.com/golang/protobuf"
+	GOOS= GOARCH= go install github.com/golang/protobuf/protoc-gen-go
+	# Generate mirrorbits RPC code.
+	PATH="${GOPATH}/bin:${PATH}" protoc -I rpc rpc/rpc.proto --go_out=plugins=grpc:rpc
+	# Clean up protoc-gen-go so do_install doesn't package it.
+	rm "${GOPATH}/bin/protoc-gen-go"
+
 	cd "${GOPATH}/src/${go_import_path}"
 	govendor sync
 }