diff --git a/CHANGELOG.md b/CHANGELOG.md
index 22018ebefc..4ccaba816d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+## [v0.6.0-alpha.0] - 2020-11-14
+
 ### Added
 
 - Allow annotating resources to activate special resource locking behaviour.
@@ -21,6 +23,10 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 [PR 400]: https://github.com/rtic-rs/cortex-m-rtic/pull/400
 
+- [breaking-change] [PR 399] Locking resources are now always required to achieve a symmetric UI.
+
+[PR 399]: https://github.com/rtic-rs/cortex-m-rtic/pull/399
+
 - [breaking-change] [PR 390]  Rework whole spawn/schedule, support `foo::spawn( ... )`,
   `foo::schedule( ... )`.
 
diff --git a/Cargo.toml b/Cargo.toml
index 6fe5fce38f..81d843e477 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,7 @@ license = "MIT OR Apache-2.0"
 name = "cortex-m-rtic"
 readme = "README.md"
 repository = "https://github.com/rtic-rs/cortex-m-rtic"
-version = "0.5.5"
+version = "0.6.0-alpha.0"
 
 [lib]
 name = "rtic"
@@ -56,7 +56,7 @@ required-features = ["__v7"]
 
 [dependencies]
 cortex-m = "0.6.2"
-cortex-m-rtic-macros = { path = "macros", version = "0.5.2" }
+cortex-m-rtic-macros = { path = "macros", version = "0.6.0-alpha.0" }
 rtic-core = "0.3.0"
 cortex-m-rt = "0.6.9"
 heapless = "0.5.0"
diff --git a/macros/Cargo.toml b/macros/Cargo.toml
index a9f268fbf8..3af48c7684 100644
--- a/macros/Cargo.toml
+++ b/macros/Cargo.toml
@@ -12,7 +12,7 @@ license = "MIT OR Apache-2.0"
 name = "cortex-m-rtic-macros"
 readme = "../README.md"
 repository = "https://github.com/rtic-rs/cortex-m-rtic"
-version = "0.5.2"
+version = "0.6.0-alpha.0"
 
 [lib]
 proc-macro = true