diff --git a/CHANGELOG.md b/CHANGELOG.md
index 091054c..29c768f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to OpenEMC 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).
 
+## 0.5.1 - 2023-03-06
+### Fixed
+- more robust ring buffer implementation
+
 ## 0.5.0 - 2023-03-03
 ### Added
 - logging to host via I2C with temporary storage in persistent memory buffer
diff --git a/openemc-bootloader/Cargo.lock b/openemc-bootloader/Cargo.lock
index 324938f..fa2bf41 100644
--- a/openemc-bootloader/Cargo.lock
+++ b/openemc-bootloader/Cargo.lock
@@ -166,7 +166,7 @@ checksum = "546c37ac5d9e56f55e73b677106873d9d9f5190605e41a856503623648488cae"
 
 [[package]]
 name = "openemc-bootloader"
-version = "0.2.0"
+version = "0.2.1"
 dependencies = [
  "cortex-m",
  "cortex-m-rt",
diff --git a/openemc-bootloader/Cargo.toml b/openemc-bootloader/Cargo.toml
index dbd28cb..2fba8ef 100644
--- a/openemc-bootloader/Cargo.toml
+++ b/openemc-bootloader/Cargo.toml
@@ -3,7 +3,7 @@ name = "openemc-bootloader"
 description = "OpenEMC Bootloader"
 authors = ["Sebastian Urban <surban@surban.net>"]
 license = "GPL-3.0"
-version = "0.2.0"
+version = "0.2.1"
 publish = false
 edition = "2021"
 
diff --git a/openemc-firmware/Cargo.lock b/openemc-firmware/Cargo.lock
index 158f1c6..33f8d5f 100644
--- a/openemc-firmware/Cargo.lock
+++ b/openemc-firmware/Cargo.lock
@@ -309,7 +309,7 @@ checksum = "546c37ac5d9e56f55e73b677106873d9d9f5190605e41a856503623648488cae"
 
 [[package]]
 name = "openemc-firmware"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "cortex-m",
  "cortex-m-rt",
diff --git a/openemc-firmware/Cargo.toml b/openemc-firmware/Cargo.toml
index 4f3c094..aaa0c40 100644
--- a/openemc-firmware/Cargo.toml
+++ b/openemc-firmware/Cargo.toml
@@ -3,7 +3,7 @@ name = "openemc-firmware"
 description = "OpenEMC Firmware"
 authors = ["Sebastian Urban <surban@surban.net>"]
 license = "GPL-3.0"
-version = "0.5.0"
+version = "0.5.1"
 publish = false
 edition = "2021"