diff --git a/go.mod b/go.mod
index cb44afe..adf6f73 100644
--- a/go.mod
+++ b/go.mod
@@ -12,6 +12,7 @@ require (
 	github.com/ipfs/go-log v0.0.1
 	github.com/ipfs/go-metrics-interface v0.0.1
 	github.com/multiformats/go-multihash v0.0.14
+	github.com/stretchr/testify v1.3.0
 	go.uber.org/atomic v1.6.0
 )