diff --git a/go.mod b/go.mod
index 75720f22..d09d3de0 100644
--- a/go.mod
+++ b/go.mod
@@ -7,6 +7,7 @@ require (
 	github.com/eapache/channels v1.1.0
 	github.com/eapache/queue v1.1.0 // indirect
 	github.com/go-test/deep v1.0.7
+	github.com/google/go-cmp v0.5.5
 	github.com/google/uuid v1.3.0
 	github.com/jessevdk/go-flags v1.5.0
 	github.com/k-sone/critbitgo v1.4.0