diff --git a/Project.toml b/Project.toml
index 06aad15464..02a377e00c 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "Transducers"
 uuid = "28d57a85-8fef-5791-bfe6-a80928e7c999"
 authors = ["Takafumi Arakaki <aka.tkf@gmail.com>"]
-version = "0.4.38-DEV"
+version = "0.4.38"
 
 [deps]
 ArgCheck = "dce04be8-c92d-5529-be00-80e4d2c0e197"