diff --git a/Chapter-4-applying-tactical-domain-driven-design/Fitnet.Common/Directory.Build.props b/Chapter-4-applying-tactical-domain-driven-design/Fitnet.Common/Directory.Build.props
index bff68e83..90311e69 100644
--- a/Chapter-4-applying-tactical-domain-driven-design/Fitnet.Common/Directory.Build.props
+++ b/Chapter-4-applying-tactical-domain-driven-design/Fitnet.Common/Directory.Build.props
@@ -12,7 +12,7 @@
         <EnforceCodeStyleInBuild>true</EnforceCodeStyleInBuild>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <RepositoryUrl>https://github.com/evolutionary-architecture/evolutionary-architecture-by-example</RepositoryUrl>
-        <Version>1.3.0</Version>
+        <Version>4.0.0</Version>
     </PropertyGroup>
 
     <ItemGroup>