diff --git a/go.mod b/go.mod
index 38f7523d8..8045b87f2 100644
--- a/go.mod
+++ b/go.mod
@@ -40,6 +40,8 @@ require (
 	github.com/rfjakob/eme v0.0.0-20171028163933-2222dbd4ba46
 	github.com/russross/blackfriday v1.5.2 // indirect
 	github.com/sevlyar/go-daemon v0.1.4
+	github.com/shurcooL/httpfs v0.0.0-20171119174359-809beceb2371 // indirect
+	github.com/shurcooL/vfsgen v0.0.0-20181202132449-6a9ea43bcacd // indirect
 	github.com/skratchdot/open-golang v0.0.0-20160302144031-75fb7ed4208c
 	github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d // indirect
 	github.com/smartystreets/goconvey v0.0.0-20181108003508-044398e4856c // indirect
diff --git a/go.sum b/go.sum
index 1c75d1746..46f11519c 100644
--- a/go.sum
+++ b/go.sum
@@ -86,6 +86,10 @@ github.com/russross/blackfriday v1.5.2 h1:HyvC0ARfnZBqnXwABFeSZHpKvJHJJfPz81GNue
 github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
 github.com/sevlyar/go-daemon v0.1.4 h1:Ayxp/9SNHwPBjV+kKbnHl2ch6rhxTu08jfkGkoxgULQ=
 github.com/sevlyar/go-daemon v0.1.4/go.mod h1:6dJpPatBT9eUwM5VCw9Bt6CdX9Tk6UWvhW3MebLDRKE=
+github.com/shurcooL/httpfs v0.0.0-20171119174359-809beceb2371 h1:SWV2fHctRpRrp49VXJ6UZja7gU9QLHwRpIPBN89SKEo=
+github.com/shurcooL/httpfs v0.0.0-20171119174359-809beceb2371/go.mod h1:ZY1cvUeJuFPAdZ/B6v7RHavJWZn2YPVFQ1OSXhCGOkg=
+github.com/shurcooL/vfsgen v0.0.0-20181202132449-6a9ea43bcacd h1:ug7PpSOB5RBPK1Kg6qskGBoP3Vnj/aNYFTznWvlkGo0=
+github.com/shurcooL/vfsgen v0.0.0-20181202132449-6a9ea43bcacd/go.mod h1:TrYk7fJVaAttu97ZZKrO9UbRa8izdowaMIZcxYMbVaw=
 github.com/skratchdot/open-golang v0.0.0-20160302144031-75fb7ed4208c h1:fyKiXKO1/I/B6Y2U8T7WdQGWzwehOuGIrljPtt7YTTI=
 github.com/skratchdot/open-golang v0.0.0-20160302144031-75fb7ed4208c/go.mod h1:sUM3LWHvSMaG192sy56D9F7CNvL7jUJVXoqM1QKLnog=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d h1:zE9ykElWQ6/NYmHa3jpm/yHnI4xSofP+UP6SpjHcSeM=