diff --git a/CHANGELOG.md b/CHANGELOG.md
index adcba1c7b4..7445884188 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## [v4.8.0](https://github.com/swift-nav/libsbp/tree/v4.8.0)
+## [v4.8.0](https://github.com/swift-nav/libsbp/tree/v4.8.0) (2020-09-29)
 
 [Full Changelog](https://github.com/swift-nav/libsbp/compare/v4.7.0...HEAD)
 
diff --git a/c/include/libsbp/version.h b/c/include/libsbp/version.h
index 00866e51f9..e985a2031a 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 "4.8.0"
+#define SBP_VERSION "4.8.1-alpha"
 
 /** Is this a staging branch? */
 #define SBP_STAGING 0
diff --git a/docs/sbp.pdf b/docs/sbp.pdf
index 966613d765..deb3b2bad8 100644
Binary files a/docs/sbp.pdf and b/docs/sbp.pdf differ
diff --git a/haskell/sbp.cabal b/haskell/sbp.cabal
index 21f9c9a90f..41cc93a39d 100644
--- a/haskell/sbp.cabal
+++ b/haskell/sbp.cabal
@@ -1,5 +1,5 @@
 name:                  sbp
-version:               4.8.0
+version:               4.8.1-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 6ca6df113f..f27c9fe524 100644
--- a/javascript/sbp/RELEASE-VERSION
+++ b/javascript/sbp/RELEASE-VERSION
@@ -1 +1 @@
-4.8.0
\ No newline at end of file
+4.8.1-alpha
\ No newline at end of file
diff --git a/python/sbp/RELEASE-VERSION b/python/sbp/RELEASE-VERSION
index 6ca6df113f..f27c9fe524 100644
--- a/python/sbp/RELEASE-VERSION
+++ b/python/sbp/RELEASE-VERSION
@@ -1 +1 @@
-4.8.0
\ No newline at end of file
+4.8.1-alpha
\ No newline at end of file
diff --git a/rust/sbp/Cargo.toml b/rust/sbp/Cargo.toml
index 2e9b76e590..f39b85a708 100644
--- a/rust/sbp/Cargo.toml
+++ b/rust/sbp/Cargo.toml
@@ -7,7 +7,7 @@
 
 [package]
 name = "sbp"
-version = "4.8.0"
+version = "4.8.1-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 245bde9ece..9191e3a909 100644
--- a/rust/sbp2json/Cargo.toml
+++ b/rust/sbp2json/Cargo.toml
@@ -7,7 +7,7 @@
 
 [package]
 name = "sbp2json"
-version = "4.8.0-unreleased"
+version = "4.8.1-alpha"
 description = "Rust native implementation of SBP (Swift Binary Protocol) to JSON conversion tools"
 authors = ["Swift Navigation <dev@swiftnav.com>"]
 edition = "2018"