diff --git a/CHANGELOG.md b/CHANGELOG.md
index b91a9f2bf0..c596f96325 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,28 @@
 # Changelog
 
+## [v5.0.5](https://github.com/swift-nav/libsbp/tree/v5.0.5) (2024-01-03)
+
+[Full Changelog](https://github.com/swift-nav/libsbp/compare/v5.0.4...v5.0.5)
+
+**Closed issues:**
+
+- `MsgUtcTime` implementation of `gps\_time` is not checking status flags [\#1385](https://github.com/swift-nav/libsbp/issues/1385)
+
+**Merged pull requests:**
+
+- Change default codeowner of /c from platform to algint [\#1398](https://github.com/swift-nav/libsbp/pull/1398) ([woodfell](https://github.com/woodfell))
+- Don't use deprecated functions in sbp impl [\#1397](https://github.com/swift-nav/libsbp/pull/1397) ([woodfell](https://github.com/woodfell))
+- Clarify timestamping descriptions  [\#1395](https://github.com/swift-nav/libsbp/pull/1395) ([reimerix](https://github.com/reimerix))
+- Parallel build all C tests from top level makefile  [\#1394](https://github.com/swift-nav/libsbp/pull/1394) ([woodfell](https://github.com/woodfell))
+- Use docker in GA  [\#1393](https://github.com/swift-nav/libsbp/pull/1393) ([woodfell](https://github.com/woodfell))
+- Bump node.js version to 18.17.0  [\#1392](https://github.com/swift-nav/libsbp/pull/1392) ([woodfell](https://github.com/woodfell))
+- update web structs [\#1391](https://github.com/swift-nav/libsbp/pull/1391) ([pcrumley](https://github.com/pcrumley))
+- update how to for new rust instruction [\#1390](https://github.com/swift-nav/libsbp/pull/1390) ([pcrumley](https://github.com/pcrumley))
+- remove -i option from sed [\#1389](https://github.com/swift-nav/libsbp/pull/1389) ([pcrumley](https://github.com/pcrumley))
+- Add missing bindings to check generated artefacts CI stage  [\#1387](https://github.com/swift-nav/libsbp/pull/1387) ([woodfell](https://github.com/woodfell))
+- reduce number of python tests to 2 [\#1386](https://github.com/swift-nav/libsbp/pull/1386) ([pcrumley](https://github.com/pcrumley))
+- Deprecate legacy API  [\#1373](https://github.com/swift-nav/libsbp/pull/1373) ([woodfell](https://github.com/woodfell))
+
 ## [v5.0.4](https://github.com/swift-nav/libsbp/tree/v5.0.4) (2023-12-07)
 
 [Full Changelog](https://github.com/swift-nav/libsbp/compare/v5.0.3...v5.0.4)
diff --git a/c/include/libsbp/version.h b/c/include/libsbp/version.h
index 4667b9f95e..188de5b276 100644
--- a/c/include/libsbp/version.h
+++ b/c/include/libsbp/version.h
@@ -28,7 +28,7 @@
 #define SBP_PATCH_VERSION 5
 
 /** Full SBP version string. */
-#define SBP_VERSION "5.0.5"
+#define SBP_VERSION "5.0.6-alpha"
 
 /** Is this a staging branch? */
 #define SBP_STAGING 0
diff --git a/docs/sbp.pdf b/docs/sbp.pdf
index 534ed9bbc2..d8562253f6 100644
Binary files a/docs/sbp.pdf and b/docs/sbp.pdf differ
diff --git a/haskell/sbp.cabal b/haskell/sbp.cabal
index 69a06acd51..b2a2b42a54 100644
--- a/haskell/sbp.cabal
+++ b/haskell/sbp.cabal
@@ -1,5 +1,5 @@
 name:                  sbp
-version:               5.0.5
+version:               5.0.6-alpha
 synopsis:              SwiftNav's SBP Library
 homepage:              https://github.com/swift-nav/libsbp
 license:               MIT
diff --git a/javascript/sbp/RELEASE-VERSION b/javascript/sbp/RELEASE-VERSION
index 25b08bbc78..758cd7ae5f 100644
--- a/javascript/sbp/RELEASE-VERSION
+++ b/javascript/sbp/RELEASE-VERSION
@@ -1 +1 @@
-5.0.5
\ No newline at end of file
+5.0.6-alpha
\ No newline at end of file
diff --git a/kaitai/ksy/sbp.ksy b/kaitai/ksy/sbp.ksy
index 367f086cb0..f1336c243f 100644
--- a/kaitai/ksy/sbp.ksy
+++ b/kaitai/ksy/sbp.ksy
@@ -8,7 +8,7 @@
 # EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
 # WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
 #
-# Kaitai Struct definition file for Swift Binary Protocol 5.0.5
+# Kaitai Struct definition file for Swift Binary Protocol 5.0.6-alpha
 #
 # Automatically generated with generate.py.  Do not hand edit!
 
diff --git a/package-lock.json b/package-lock.json
index 5f681d2953..7af21baa31 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "sbp",
-  "version": "5.0.5",
+  "version": "5.0.6-alpha",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "sbp",
-      "version": "5.0.5",
+      "version": "5.0.6-alpha",
       "license": "MIT",
       "dependencies": {
         "binary-parser": "^1.7.0",
diff --git a/package.json b/package.json
index 67586b2bb9..86b0d7da5d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sbp",
-  "version": "5.0.5",
+  "version": "5.0.6-alpha",
   "description": "libsbp bindings for JavaScript. More information here: http://swift-nav.github.io/libsbp/",
   "files": [
     "javascript/*",
diff --git a/python/sbp/RELEASE-VERSION b/python/sbp/RELEASE-VERSION
index 25b08bbc78..758cd7ae5f 100644
--- a/python/sbp/RELEASE-VERSION
+++ b/python/sbp/RELEASE-VERSION
@@ -1 +1 @@
-5.0.5
\ No newline at end of file
+5.0.6-alpha
\ No newline at end of file
diff --git a/rust/sbp/Cargo.toml b/rust/sbp/Cargo.toml
index f1970562ba..2d39b95e6b 100644
--- a/rust/sbp/Cargo.toml
+++ b/rust/sbp/Cargo.toml
@@ -7,7 +7,7 @@
 
 [package]
 name = "sbp"
-version = "5.0.5"
+version = "5.0.6-alpha"
 description = "Rust native implementation of SBP (Swift Binary Protocol) for communicating with devices made by Swift Navigation"
 authors = ["Swift Navigation <dev@swiftnav.com>"]
 repository = "https://github.com/swift-nav/libsbp"
diff --git a/rust/sbp2json/Cargo.toml b/rust/sbp2json/Cargo.toml
index c23918151b..02fb85d2ee 100644
--- a/rust/sbp2json/Cargo.toml
+++ b/rust/sbp2json/Cargo.toml
@@ -7,7 +7,7 @@
 
 [package]
 name = "sbp2json"
-version = "5.0.5-unreleased"
+version = "5.0.6-alpha"
 repository = "https://github.com/swift-nav/libsbp"
 description = "Rust native implementation of SBP (Swift Binary Protocol) to JSON conversion tools"
 authors = ["Swift Navigation <dev@swiftnav.com>"]