diff --git a/Project.toml b/Project.toml
index 14f2427..b1dcbda 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "ExperimentalAPI"
 uuid = "fd2d14cb-3a46-42a9-afd8-e8499236f05e"
-version = "0.1.1"
+version = "0.1.0"
 authors = ["sota shimozono <shimozono-sota631@g.ecc.u-tokyo.ac.jp>"]
 
 [deps]