diff --git a/CHANGELOG.md b/CHANGELOG.md
index 00f1c3dfa2..caaa67ba0f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,25 @@
 # Changelog
 
+## [v4.13.0](https://github.com/swift-nav/libsbp/tree/v4.13.0) (2023-03-28)
+
+[Full Changelog](https://github.com/swift-nav/libsbp/compare/v4.12.0...v4.13.0)
+
+**Merged pull requests:**
+
+- Auto submodule update: cmake - Turn SonarCloud duplicate detection off for unit tests \(\#150\) [\#1310](https://github.com/swift-nav/libsbp/pull/1310) ([swiftnav-svc-jenkins](https://github.com/swiftnav-svc-jenkins))
+- Update bazel to be able to build [\#1309](https://github.com/swift-nav/libsbp/pull/1309) ([RReichert](https://github.com/RReichert))
+- Upgrade google test to 1.11 [\#1308](https://github.com/swift-nav/libsbp/pull/1308) ([RReichert](https://github.com/RReichert))
+- fix signature in MsgCertificateChain \[GV2-193\]  [\#1307](https://github.com/swift-nav/libsbp/pull/1307) ([notoriaga](https://github.com/notoriaga))
+- variable length ecdsa signature \[GV2-193\] [\#1306](https://github.com/swift-nav/libsbp/pull/1306) ([notoriaga](https://github.com/notoriaga))
+- bazel: use c only macros \[BUILD-560\] [\#1305](https://github.com/swift-nav/libsbp/pull/1305) ([isaactorz](https://github.com/isaactorz))
+- Add identifier for TDK IAM-20680HP IMU \[ESD-2563\] [\#1304](https://github.com/swift-nav/libsbp/pull/1304) ([woodfell](https://github.com/woodfell))
+- update MSG\_ACKNOWLEDGE on demand fields [\#1303](https://github.com/swift-nav/libsbp/pull/1303) ([notoriaga](https://github.com/notoriaga))
+- signing: add new ECDSA based signature messages [\#1302](https://github.com/swift-nav/libsbp/pull/1302) ([silverjam](https://github.com/silverjam))
+- Auto submodule update: cmake - Remove pvt-runner-lib from search libraries in starling target \(\#148\) [\#1301](https://github.com/swift-nav/libsbp/pull/1301) ([swiftnav-svc-jenkins](https://github.com/swiftnav-svc-jenkins))
+- bazel add gen\_compile\_commands target \[BUILD-547\] [\#1300](https://github.com/swift-nav/libsbp/pull/1300) ([wwieclaw](https://github.com/wwieclaw))
+- enforce setup CI gradle v7.1.1 [\#1298](https://github.com/swift-nav/libsbp/pull/1298) ([adrian-kong](https://github.com/adrian-kong))
+- prep next release \#no\_auto\_pr [\#1297](https://github.com/swift-nav/libsbp/pull/1297) ([adrian-kong](https://github.com/adrian-kong))
+
 ## [v4.12.0](https://github.com/swift-nav/libsbp/tree/v4.12.0) (2023-02-27)
 
 [Full Changelog](https://github.com/swift-nav/libsbp/compare/v4.11.0...v4.12.0)
diff --git a/c/include/libsbp/version.h b/c/include/libsbp/version.h
index 17606f230d..d211f22e8d 100644
--- a/c/include/libsbp/version.h
+++ b/c/include/libsbp/version.h
@@ -28,7 +28,7 @@
 #define SBP_PATCH_VERSION 0
 
 /** Full SBP version string. */
-#define SBP_VERSION "4.13.0"
+#define SBP_VERSION "4.13.1-alpha"
 
 /** Is this a staging branch? */
 #define SBP_STAGING 0
diff --git a/docs/sbp.pdf b/docs/sbp.pdf
index 8a30e2a885..08a3ca2589 100644
Binary files a/docs/sbp.pdf and b/docs/sbp.pdf differ
diff --git a/haskell/sbp.cabal b/haskell/sbp.cabal
index d506476fa3..370fae0c3a 100644
--- a/haskell/sbp.cabal
+++ b/haskell/sbp.cabal
@@ -1,5 +1,5 @@
 name:                  sbp
-version:               4.13.0
+version:               4.13.1-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 01b73abe55..c3a3c34967 100644
--- a/javascript/sbp/RELEASE-VERSION
+++ b/javascript/sbp/RELEASE-VERSION
@@ -1 +1 @@
-4.13.0
\ No newline at end of file
+4.13.1-alpha
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 4c942288b8..be9ddb7e00 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "sbp",
-  "version": "4.13.0",
+  "version": "4.13.1-alpha",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "sbp",
-      "version": "4.13.0",
+      "version": "4.13.1-alpha",
       "license": "MIT",
       "dependencies": {
         "binary-parser": "^1.7.0",
diff --git a/package.json b/package.json
index 5d1d569c7e..5b1e828069 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sbp",
-  "version": "4.13.0",
+  "version": "4.13.1-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 01b73abe55..c3a3c34967 100644
--- a/python/sbp/RELEASE-VERSION
+++ b/python/sbp/RELEASE-VERSION
@@ -1 +1 @@
-4.13.0
\ No newline at end of file
+4.13.1-alpha
\ No newline at end of file
diff --git a/rust/sbp/Cargo.toml b/rust/sbp/Cargo.toml
index 842d99fda1..d3d0df2216 100644
--- a/rust/sbp/Cargo.toml
+++ b/rust/sbp/Cargo.toml
@@ -7,7 +7,7 @@
 
 [package]
 name = "sbp"
-version = "4.13.0"
+version = "4.13.1-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 13fad07dc6..7eab8485f9 100644
--- a/rust/sbp2json/Cargo.toml
+++ b/rust/sbp2json/Cargo.toml
@@ -7,7 +7,7 @@
 
 [package]
 name = "sbp2json"
-version = "4.13.0-unreleased"
+version = "4.13.1-alpha"
 description = "Rust native implementation of SBP (Swift Binary Protocol) to JSON conversion tools"
 authors = ["Swift Navigation <dev@swiftnav.com>"]
 edition = "2018"