diff --git a/libbutler/go.mod b/libbutler/go.mod
index 11b3812..365feee 100644
--- a/libbutler/go.mod
+++ b/libbutler/go.mod
@@ -4,9 +4,11 @@ go 1.14
 
 require (
 	crawshaw.io/sqlite v0.2.5
+	github.com/itchio/boar v0.0.0-20200305195307-d2befc01fa9e
 	github.com/itchio/butler v1.9.1-0.20200520113126-543afe9f2c0c
 	github.com/itchio/go-itchio v0.0.0-20200402182019-61224e60358e // indirect
 	github.com/itchio/headway v0.0.0-20200301160421-e15721f23905
+	github.com/itchio/wharf v0.0.0-20200305150844-3ed0814c4e98
 	github.com/mitchellh/mapstructure v1.2.2 // indirect
 	github.com/pkg/errors v0.9.1
 	golang.org/x/crypto v0.0.0-20200423211502-4bdfaf469ed5 // indirect
diff --git a/libbutler/server/server.go b/libbutler/server/server.go
index 020b452..cb484f1 100644
--- a/libbutler/server/server.go
+++ b/libbutler/server/server.go
@@ -16,6 +16,11 @@ import (
 	"github.com/itchio/butler/mansion"
 	"github.com/itchio/headway/state"
 	"github.com/pkg/errors"
+
+	_ "github.com/itchio/wharf/compressors/cbrotli"
+	_ "github.com/itchio/wharf/decompressors/cbrotli"
+
+	_ "github.com/itchio/boar/lzmasupport"
 )
 
 type Server struct {