diff --git a/Cargo.lock b/Cargo.lock
index 149f201..ce8ca9d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -10,7 +10,7 @@ dependencies = [
 
 [[package]]
 name = "bdwgc-alloc"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "autotools 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/Cargo.toml b/Cargo.toml
index 15d1795..905e19e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "bdwgc-alloc"
 description = "impl GlobalAlloc for bdwgc"
-version = "0.3.0"
+version = "0.4.0"
 authors = ["swgillespie <sean.william.g@gmail.com>", "Yota Toyama <raviqqe@gmail.com>"]
 repository = "https://github.com/raviqqe/bdwgc-alloc"
 edition = "2018"