diff --git a/Project.toml b/Project.toml
index 2ddcb42..8e0e3d1 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "PSBoardDataBase"
 uuid = "779f6a9c-59fa-41f1-8ed1-e9a91eccb2f5"
 authors = ["Wataru Otsubo <wotsubo@icepp.s.u-tokyo.ac.jp>"]
-version = "0.2.0"
+version = "0.2.0-DEV"
 
 [deps]
 CSV = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"