diff --git a/appveyor.yml b/appveyor.yml
index e039c3e..0d586d4 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-version: 1.8.0.{build}
+version: 1.9.0.{build}
 image: Visual Studio 2022
 configuration: Release
 
@@ -9,7 +9,7 @@ dotnet_csproj:
   patch: true
   file: '**\*.csproj'
   version: '{version}'
-  package_version: 1.8.0
+  package_version: 1.9.0
   assembly_version: '{version}'
   file_version: '{version}'
   informational_version: '{version}'