diff --git a/Gopkg.toml b/Gopkg.toml
index 3501e5597..10744f8d4 100644
--- a/Gopkg.toml
+++ b/Gopkg.toml
@@ -263,6 +263,14 @@ name = "golang.org/x/sys"
   name = "github.com/multiformats/go-multistream"
   revision = "661a0b9a0e6d9e99e4552c431b0eb82f58fde5b3"
 
+[[constraint]]
+  name = "github.com/gxed/hashland"
+  revision = "d9f6b97f8db22dd1e090fd0bbbe98f09cc7dd0a8"
+
+[[constraint]]
+  name = "github.com/multiformats/go-multihash"
+  revision = "468a1b73e980e5aff011d308623e43e28c582b16"
+
 
 [[constraint]]
   name = "github.com/multiformats/go-multiaddr-net"