diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7f45155a..a5439da0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,29 @@ All notable changes to this project after the 0.2.0 release will be documented i
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.13.1][] - 2025-04-12
+
+Fix a bug in measurement to string operation with empty units, resolve some issues with external googletest usage on some platforms
+
+### Fixed
+
+- Fix bug when converting precise_measurement to a string where the unit was precise::one [#387][]
+- Fix issue when using external google test library on FreeBSD [#384][]
+
+### Added
+
+- Added FreeBSD github actions to test on FreeBSD and use GTest::XXX targets [#384][]
+
+### Changed
+
+- update third party libraries (googletest and CLI11) [#385][]
+- update decompose operation on dimension and some further refinements in default_unit operations [#387][]
+
+[#384]: https://github.com/LLNL/units/pull/384
+[#385]: https://github.com/LLNL/units/pull/385
+[#387]: https://github.com/LLNL/units/pull/387
+[0.13.1]: https://github.com/LLNL/units/releases/tag/v0.13.1
+
 ## [0.13.0][] - 2025-04-05
 
 Updated installation, add means of using external gtest, some bug fixes, and addition methods on the Python library classes.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7b11348a..cf354b3a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,7 +23,7 @@ endif()
 project(
     ${UNITS_CMAKE_PROJECT_NAME}
     LANGUAGES C CXX
-    VERSION 0.13.0
+    VERSION 0.13.1
 )
 include(CMakeDependentOption)
 include(CTest)
diff --git a/pyproject.toml b/pyproject.toml
index 86564265..c416fd72 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ build-backend = "scikit_build_core.build"
 
 [project]
 name = "units_llnl"
-version = "0.13.0"
+version = "0.13.1"
 description = "Python bindings for the LLNL units library"
 readme = "python/README.md"
 requires-python = ">=3.10"