diff --git a/Cargo.lock b/Cargo.lock
index 6aa7228..429bffb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -916,7 +916,7 @@ dependencies = [
 
 [[package]]
 name = "lindera-py"
-version = "0.38.3"
+version = "0.38.4"
 dependencies = [
  "lindera",
  "openssl",
diff --git a/Cargo.toml b/Cargo.toml
index b9b6e57..2b4c294 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "lindera-py"
-version = "0.38.3"
+version = "0.38.4"
 edition = "2021"
 description = "Python binding for Lindera."
 documentation = "https://docs.rs/lindera-py"
diff --git a/pyproject.toml b/pyproject.toml
index 373fd00..f956c86 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "lindera_py"
-version = "0.38.3"
+version = "0.38.4"
 description = ""
 authors = ["Minoru Osuka <minoru.osuka@gmail.com>"]
 license = "MIT"