diff --git a/CHANGELOG.md b/CHANGELOG.md
index f425bf875b..09a7b68d6e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [0.5.1] - 2022-05-14
 ### Added
 - Added `Rtc::alarm_{a,b}` to get the alarm value.
 - Added `impl From<Alarm> for chrono::NaiveTime`.
@@ -100,7 +100,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 [tweedegolf]: https://github.com/tweedegolf
 [stm32-rs]: https://github.com/stm32-rs
-[Unreleased]: https://github.com/stm32-rs/stm32wlxx-hal/compare/v0.5.0...HEAD
+[Unreleased]: https://github.com/stm32-rs/stm32wlxx-hal/compare/v0.5.1...HEAD
+[0.5.1]: https://github.com/stm32-rs/stm32wlxx-hal/compare/v0.5.0...v0.5.1
 [0.5.0]: https://github.com/stm32-rs/stm32wlxx-hal/compare/v0.4.1...v0.5.0
 [0.4.1]: https://github.com/stm32-rs/stm32wlxx-hal/compare/v0.4.0...v0.4.1
 [0.4.0]: https://github.com/stm32-rs/stm32wlxx-hal/compare/v0.3.0...v0.4.0
diff --git a/Cargo.lock b/Cargo.lock
index fc02be1a15..aaf3769db2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -319,7 +319,7 @@ checksum = "5916d2ae698f6de9bfb891ad7a8d65c09d232dc58cc4ac433c7da3b2fd84bc2b"
 
 [[package]]
 name = "lora-e5-bsp"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "defmt",
  "stm32wlxx-hal",
@@ -348,7 +348,7 @@ checksum = "546c37ac5d9e56f55e73b677106873d9d9f5190605e41a856503623648488cae"
 
 [[package]]
 name = "nucleo-wl55jc-bsp"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "defmt",
  "stm32wlxx-hal",
@@ -606,7 +606,7 @@ dependencies = [
 
 [[package]]
 name = "stm32wlxx-hal"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "cfg-if",
  "chrono",
@@ -633,9 +633,9 @@ checksum = "6bdef32e8150c2a081110b42772ffe7d7c9032b606bc226c8260fd97e0976601"
 
 [[package]]
 name = "syn"
-version = "1.0.92"
+version = "1.0.94"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ff7c592601f11445996a06f8ad0c27f094a58857c2f89e97974ab9235b92c52"
+checksum = "a07e33e919ebcd69113d5be0e4d70c5707004ff45188910106854f38b960df4a"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/README.md b/README.md
index e163b67e1d..fd737f94ef 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ This is still in development, the code that exists today covers basic usage of:
 
 ```toml
 [dependencies.stm32wlxx-hal]
-version = "0.5.0"
+version = "0.5.1"
 features = [
     # use exactly one to match your target hardware
     "stm32wl5x_cm0p",
diff --git a/hal/Cargo.toml b/hal/Cargo.toml
index 100c9eab9a..9788506b1b 100644
--- a/hal/Cargo.toml
+++ b/hal/Cargo.toml
@@ -10,7 +10,7 @@ readme = "../README.md"
 # * BSP READMES
 # * lock file
 # * CHANGELOG Unreleased (URL and header)
-version = "0.5.0"
+version = "0.5.1"
 authors = ["Alex Martens <alex@thinglab.org>"]
 edition = "2021"
 rust-version = "1.60"  # update MSRV in CI, BSPs, and shield in README
diff --git a/lora-e5-bsp/Cargo.toml b/lora-e5-bsp/Cargo.toml
index fd663b3157..a2beee5557 100644
--- a/lora-e5-bsp/Cargo.toml
+++ b/lora-e5-bsp/Cargo.toml
@@ -3,7 +3,7 @@ name = "lora-e5-bsp"
 description = "Board support package for the seeed LoRa-E5 development kit"
 readme = "README.md"
 
-version = "0.5.0"
+version = "0.5.1"
 authors = ["Alex Martens <alex@thinglab.org>"]
 edition = "2021"
 rust-version = "1.60"
@@ -19,7 +19,7 @@ embedded-time = ["stm32wlxx-hal/embedded-time"]
 rt = ["stm32wlxx-hal/rt"]
 
 [dependencies.stm32wlxx-hal]
-version = "=0.5.0"
+version = "=0.5.1"
 path = "../hal"
 features = ["stm32wle5"]
 
diff --git a/lora-e5-bsp/README.md b/lora-e5-bsp/README.md
index 29f5836cb2..fb4e86d6e0 100644
--- a/lora-e5-bsp/README.md
+++ b/lora-e5-bsp/README.md
@@ -8,7 +8,7 @@ This crate extends the [stm32wlxx-hal] with board specific hardware, see that cr
 
 ```toml
 [dependencies.lora-e5-bsp]
-version = "0.5.0"
+version = "0.5.1"
 features = [
     # optional: use the cortex-m-rt interrupt interface
     "rt",
diff --git a/nucleo-wl55jc-bsp/Cargo.toml b/nucleo-wl55jc-bsp/Cargo.toml
index fef3fe3415..bdaeec3145 100644
--- a/nucleo-wl55jc-bsp/Cargo.toml
+++ b/nucleo-wl55jc-bsp/Cargo.toml
@@ -3,7 +3,7 @@ name = "nucleo-wl55jc-bsp"
 description = "Board support package for the NUCLEO-WL55JC"
 readme = "README.md"
 
-version = "0.5.0"
+version = "0.5.1"
 authors = ["Alex Martens <alex@thinglab.org>"]
 edition = "2021"
 rust-version = "1.60"
@@ -21,7 +21,7 @@ stm32wl5x_cm0p = ["stm32wlxx-hal/stm32wl5x_cm0p"]
 stm32wl5x_cm4 = ["stm32wlxx-hal/stm32wl5x_cm4"]
 
 [dependencies.stm32wlxx-hal]
-version = "=0.5.0"
+version = "=0.5.1"
 path = "../hal"
 
 [dependencies.defmt]
diff --git a/nucleo-wl55jc-bsp/README.md b/nucleo-wl55jc-bsp/README.md
index 0411a21be3..9391900182 100644
--- a/nucleo-wl55jc-bsp/README.md
+++ b/nucleo-wl55jc-bsp/README.md
@@ -8,7 +8,7 @@ This crate extends the [stm32wlxx-hal] with board specific hardware, see that cr
 
 ```toml
 [dependencies.nucleo-wl55jc-bsp]
-version = "0.5.0"
+version = "0.5.1"
 features = [
     # required: build for core 1
     # This is future proofing for when the HAL has APIs for core 2