diff --git a/CHANGES.md b/CHANGES.md
index 92a59850..4f18d59e 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+## v0.2.9-beta.1
+### Changed
+- Optimized the lexing process with a speedup of 80% in lexing and 76% in parsing.
+
 ## v0.2.8
 ### Added
 - Added support for string length to the constant folder.
diff --git a/build/LibraryProject.props b/build/LibraryProject.props
index 9651337c..a6218a50 100644
--- a/build/LibraryProject.props
+++ b/build/LibraryProject.props
@@ -23,7 +23,7 @@
   <PropertyGroup>
     <Authors>GGG KILLER</Authors>
     <Copyright>GGG KILLER © 2021</Copyright>
-    <Version>0.2.8</Version>
+    <Version>0.2.9-beta.1</Version>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
 
     <RepositoryUrl>https://github.com/GGG-KILLER/Loretta</RepositoryUrl>