diff --git a/pyproject.toml b/pyproject.toml
index 9adfe49..e3e7728 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ package-dir = { "c2p" = "c2p" }
 include = ["c2p*"]
 
 [project]
-version = "v0.3.0"
+version = "v0.3.1"
 name = "compliance-to-policy"
 authors = [{ name = "Takumi Yanagawa", email = "yana1205dev@gmail.com" }]
 description = "Tools to bridge Compliance and Policy"