diff --git a/go.mod b/go.mod
index f4fcab9..9004c3d 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,7 @@ module ibtReader
 go 1.23.2
 
 require (
+	github.com/google/go-cmp v0.6.0
 	golang.org/x/sys v0.26.0
 	golang.org/x/text v0.19.0
 	gopkg.in/yaml.v3 v3.0.1
diff --git a/go.sum b/go.sum
index f5eb827..4963515 100644
--- a/go.sum
+++ b/go.sum
@@ -1,3 +1,5 @@
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 golang.org/x/sys v0.26.0 h1:KHjCJyddX0LoSTb3J+vWpupP9p0oznkqVk/IfjymZbo=
 golang.org/x/sys v0.26.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.19.0 h1:kTxAhCbGbxhK0IwgSKiMO5awPoDQ0RpfiVYBfK860YM=