diff --git a/02_Windows_App/Perun_v1/Perun_v1.csproj b/02_Windows_App/Perun_v1/Perun_v1.csproj
index 2cedcb0..76a74fd 100644
--- a/02_Windows_App/Perun_v1/Perun_v1.csproj
+++ b/02_Windows_App/Perun_v1/Perun_v1.csproj
@@ -34,7 +34,7 @@
     <CreateWebPageOnPublish>true</CreateWebPageOnPublish>
     <WebPage>Perun.htm</WebPage>
     <ApplicationRevision>0</ApplicationRevision>
-    <ApplicationVersion>0.8.3.%2a</ApplicationVersion>
+    <ApplicationVersion>0.9.0.%2a</ApplicationVersion>
     <UseApplicationTrust>false</UseApplicationTrust>
     <CreateDesktopShortcut>true</CreateDesktopShortcut>
     <PublishWizardCompleted>true</PublishWizardCompleted>
diff --git a/02_Windows_App/Perun_v1/Properties/AssemblyInfo.cs b/02_Windows_App/Perun_v1/Properties/AssemblyInfo.cs
index c0d428c..92ae68d 100644
--- a/02_Windows_App/Perun_v1/Properties/AssemblyInfo.cs
+++ b/02_Windows_App/Perun_v1/Properties/AssemblyInfo.cs
@@ -33,7 +33,7 @@ using System.Runtime.InteropServices;
 // Możesz określić wszystkie wartości lub użyć domyślnych numerów kompilacji i poprawki
 // przy użyciu symbolu „*”, tak jak pokazano poniżej:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("0.8.3.0")]
-[assembly: AssemblyFileVersion("0.8.3.0")]
+[assembly: AssemblyVersion("0.9.0.0")]
+[assembly: AssemblyFileVersion("0.9.0.0")]
 [assembly: NeutralResourcesLanguage("en")]