diff --git a/go.mod b/go.mod
index 7f6b1f9..8701c49 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module go-simpler.org/musttag
 go 1.20
 
 require (
-	go-simpler.org/assert v0.7.0
+	go-simpler.org/assert v0.9.0
 	golang.org/x/tools v0.19.0
 )
 
diff --git a/go.sum b/go.sum
index af880f7..c612325 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-go-simpler.org/assert v0.7.0 h1:OzWWZqfNxt8cLS+MlUp6Tgk1HjPkmgdKBq9qvy8lZsA=
-go-simpler.org/assert v0.7.0/go.mod h1:74Eqh5eI6vCK6Y5l3PI8ZYFXG4Sa+tkr70OIPJAUr28=
+go-simpler.org/assert v0.9.0 h1:PfpmcSvL7yAnWyChSjOz6Sp6m9j5lyK8Ok9pEL31YkQ=
+go-simpler.org/assert v0.9.0/go.mod h1:74Eqh5eI6vCK6Y5l3PI8ZYFXG4Sa+tkr70OIPJAUr28=
 golang.org/x/mod v0.16.0 h1:QX4fJ0Rr5cPQCF7O9lh9Se4pmwfwskqZfq5moyldzic=
 golang.org/x/mod v0.16.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/sync v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=