diff --git a/CHANGELOG.md b/CHANGELOG.md
index f7b0d02e..fc962ac0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Unreleased
 
+# 0.6.3 - 2019-09-20
+
+* [Removed usage of mutable global state from `#[auto_enum]` for forward compatibility.][60] See also [rust-lang/rust#63831].
+
+[60]: https://github.com/taiki-e/auto_enums/pull/60
+[rust-lang/rust#63831]: https://github.com/rust-lang/rust/pull/63831
+
 # 0.6.2 - 2019-09-08
 
 * Fixed links to generated code.
diff --git a/Cargo.toml b/Cargo.toml
index 9d437a88..92bf2b28 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "auto_enums"
-version = "0.6.2"
+version = "0.6.3"
 authors = ["Taiki Endo <te316e89@gmail.com>"]
 edition = "2018"
 license = "Apache-2.0/MIT"
@@ -17,8 +17,8 @@ A library for to allow multiple return types by automatically generated enum.
 members = ["core", "derive", "test_suite"]
 
 [dependencies]
-auto_enums_core = { version = "=0.6.2", path = "core", default-features = false }
-auto_enums_derive = { version = "=0.6.2", path = "derive", default-features = false }
+auto_enums_core = { version = "=0.6.3", path = "core", default-features = false }
+auto_enums_derive = { version = "=0.6.3", path = "derive", default-features = false }
 
 [dev-dependencies]
 compiletest = { version = "0.3.22", package = "compiletest_rs", features = ["stable", "tmp"] }
diff --git a/core/Cargo.toml b/core/Cargo.toml
index 68ae8a21..7cca7a74 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "auto_enums_core"
-version = "0.6.2"
+version = "0.6.3"
 authors = ["Taiki Endo <te316e89@gmail.com>"]
 edition = "2018"
 license = "Apache-2.0/MIT"
diff --git a/core/src/lib.rs b/core/src/lib.rs
index 176cdbfa..77f7c96a 100644
--- a/core/src/lib.rs
+++ b/core/src/lib.rs
@@ -1,5 +1,5 @@
 #![recursion_limit = "256"]
-#![doc(html_root_url = "https://docs.rs/auto_enums_core/0.6.2")]
+#![doc(html_root_url = "https://docs.rs/auto_enums_core/0.6.3")]
 #![doc(test(
     no_crate_inject,
     attr(deny(warnings, rust_2018_idioms, single_use_lifetimes), allow(dead_code))
diff --git a/derive/Cargo.toml b/derive/Cargo.toml
index d036de0c..d0ee1cec 100644
--- a/derive/Cargo.toml
+++ b/derive/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "auto_enums_derive"
-version = "0.6.2"
+version = "0.6.3"
 authors = ["Taiki Endo <te316e89@gmail.com>"]
 edition = "2018"
 license = "Apache-2.0/MIT"
diff --git a/derive/src/lib.rs b/derive/src/lib.rs
index 4c0a96fc..eb3658b7 100644
--- a/derive/src/lib.rs
+++ b/derive/src/lib.rs
@@ -1,5 +1,5 @@
 #![recursion_limit = "256"]
-#![doc(html_root_url = "https://docs.rs/auto_enums_derive/0.6.2")]
+#![doc(html_root_url = "https://docs.rs/auto_enums_derive/0.6.3")]
 #![doc(test(
     no_crate_inject,
     attr(deny(warnings, rust_2018_idioms, single_use_lifetimes), allow(dead_code))
diff --git a/src/lib.rs b/src/lib.rs
index 5bdff8a5..45509fa3 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -807,7 +807,7 @@
 
 #![no_std]
 #![recursion_limit = "256"]
-#![doc(html_root_url = "https://docs.rs/auto_enums/0.6.2")]
+#![doc(html_root_url = "https://docs.rs/auto_enums/0.6.3")]
 #![doc(test(
     no_crate_inject,
     attr(deny(warnings, rust_2018_idioms, single_use_lifetimes), allow(dead_code))