diff --git a/bip-0158/go.mod b/bip-0158/go.mod
index 0e9bd6e1c6..69a530f53d 100644
--- a/bip-0158/go.mod
+++ b/bip-0158/go.mod
@@ -4,4 +4,5 @@ require (
 	github.com/btcsuite/btcd v0.0.0-20190115013929-ed77733ec07d
 	github.com/btcsuite/btcutil v0.0.0-20190207003914-4c204d697803
 	github.com/davecgh/go-spew v1.1.1
+spec1.1.1
 )