diff --git a/go.mod b/go.mod
index 989fb62..a80a7db 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,4 @@ module github.com/hbstack/code-block-tree
 
 go 1.19
 
-require github.com/hbstack/hb v0.15.3 // indirect
+require github.com/hbstack/hb v0.16.2 // indirect
diff --git a/go.sum b/go.sum
index 860a06c..d99b4d1 100644
--- a/go.sum
+++ b/go.sum
@@ -1,2 +1,3 @@
 github.com/hbstack/hb v0.15.3 h1:Q7XKGYLJobkRYKiMd4tLmmBQDaIBX7n3f8QlwAohKvA=
 github.com/hbstack/hb v0.15.3/go.mod h1:FJilVCHtkVpfXZT+Ii2OFCVeu9wQh/YGgRMuPKX5ycA=
+github.com/hbstack/hb v0.16.2/go.mod h1:f17XbKHV29zgwV0OaayneXU1nMXFpQUdBYApAPNjFMo=