diff --git a/sv-parser-syntaxtree/Cargo.toml b/sv-parser-syntaxtree/Cargo.toml
index 420a1bb..112a966 100644
--- a/sv-parser-syntaxtree/Cargo.toml
+++ b/sv-parser-syntaxtree/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "sv-parser-syntaxtree"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["dalance@gmail.com"]
 repository = "https://github.com/dalance/sv-parser"
 keywords = ["parser", "verilog", "systemverilog"]