diff --git a/MatFileHandler/MatFileHandler.csproj b/MatFileHandler/MatFileHandler.csproj
index 548eca9..9654d07 100755
--- a/MatFileHandler/MatFileHandler.csproj
+++ b/MatFileHandler/MatFileHandler.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;net461;net472</TargetFrameworks>
-    <PackageVersion>1.3.0</PackageVersion>
+    <PackageVersion>1.4.0-beta1</PackageVersion>
     <PackageId>MatFileHandler</PackageId>
     <Title>A library for reading and writing MATLAB .mat files.</Title>
     <Authors>Alexander Luzgarev</Authors>