diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5319590..03a5c8a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ All notable changes to this project 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).
 
-## [Unreleased]
+## [v0.9.0] - 2022-06-18
 
 - Added
   - More data type flexibility of `addDiag()`; Different data types are allowed for vector and matrix.
diff --git a/include/common.hpp b/include/common.hpp
index 4ef2161..82c1b8d 100644
--- a/include/common.hpp
+++ b/include/common.hpp
@@ -4,7 +4,7 @@
  */
 #pragma once
 #define MATH_LIB_VER_MAJOR 0
-#define MATH_LIB_VER_MINOR 8
+#define MATH_LIB_VER_MINOR 9
 #define MATH_LIB_VER_PATCH 0
 #define MATH_LIB_VER_ALPHA 0 // 0 if release version, 1 if alpha version
 #define MATH_LIB_ENABLE_CANARY_MODE false
diff --git a/scripts/doDebugBuild.sh b/scripts/doDebugBuild.sh
old mode 100644
new mode 100755
diff --git a/scripts/doTest.sh b/scripts/doTest.sh
old mode 100644
new mode 100755