diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7e1b54ca..af582b17 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,8 @@
 <!-- next-header -->
 ## [Unreleased] (ReleaseDate)
 
+## [v0.6.4] (2024-05-25)
+
 ### New features
 
 * New function `r_warn()` safely show a warning. Note that, a warning can raise
@@ -664,7 +666,8 @@
 * `#[savvy]` now accepts `savvy::Sexp` as input.
 
 <!-- next-url -->
-[Unreleased]: https://github.com/yutannihilation/savvy/compare/v0.6.3...HEAD
+[Unreleased]: https://github.com/yutannihilation/savvy/compare/v0.6.4...HEAD
+[v0.6.4]: https://github.com/yutannihilation/savvy/compare/v0.6.3...v0.6.4
 [v0.6.3]: https://github.com/yutannihilation/savvy/compare/v0.6.2...v0.6.3
 [v0.6.2]: https://github.com/yutannihilation/savvy/compare/v0.6.1...v0.6.2
 [v0.6.1]: https://github.com/yutannihilation/savvy/compare/v0.6.0...v0.6.1
diff --git a/Cargo.toml b/Cargo.toml
index ae316ea9..f1172675 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,8 +13,8 @@ exclude = ["/book", "/R-package", "README.qmd"]
 rust-version = "1.65.0"
 
 [dependencies]
-savvy-ffi = { version = "0.6.3", path = "./savvy-ffi" }
-savvy-macro = { version = "0.6.3", path = "./savvy-macro" }
+savvy-ffi = { version = "0.6.4", path = "./savvy-ffi" }
+savvy-macro = { version = "0.6.4", path = "./savvy-macro" }
 once_cell = "1"
 num-complex = { version = "0.4.5", optional = true }
 
@@ -62,7 +62,7 @@ members = ["savvy-macro", "savvy-bindgen", "savvy-cli", "savvy-ffi", "xtask"]
 resolver = "2"
 
 [workspace.package]
-version = "0.6.3"
+version = "0.6.4"
 edition = "2021"
 authors = ["Hiroaki Yutani"]
 license = "MIT"
diff --git a/savvy-macro/Cargo.toml b/savvy-macro/Cargo.toml
index 1a944e08..ed493e2e 100644
--- a/savvy-macro/Cargo.toml
+++ b/savvy-macro/Cargo.toml
@@ -17,7 +17,7 @@ proc-macro2 = "1"
 quote = "1"
 syn = { version = "2", features = ["full", "extra-traits"] }
 
-savvy-bindgen = { version = "0.6.3", path = "../savvy-bindgen" }
+savvy-bindgen = { version = "0.6.4", path = "../savvy-bindgen" }
 
 [dev-dependencies]
 trybuild = "1"