diff --git a/CHANGELOG.md b/CHANGELOG.md
index ddd1056..13f2657 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,2 +1,5 @@
+## Version 0.9.1 (not released yet)
+- .NET 8 update
+
 ## Version 0.9.0 (released 2023-04-13)
 - First nuget release
\ No newline at end of file
diff --git a/src/CSAscon.csproj b/src/CSAscon.csproj
index 4bc9a5a..c94c339 100644
--- a/src/CSAscon.csproj
+++ b/src/CSAscon.csproj
@@ -6,7 +6,7 @@
     <Nullable>enable</Nullable>
     <IsTrimmable>true</IsTrimmable>
     <PackageId>LibAscon128</PackageId>
-    <VersionPrefix>0.9.0</VersionPrefix>
+    <VersionPrefix>0.9.1</VersionPrefix>
     <VersionSuffix>$(VersionSuffix)</VersionSuffix>
     <Authors>Kaarlo Räihä</Authors>
     <Description>Managed C# .NET (.NET 8) library for Ascon-128 and Ascon-128a encryption/decryption</Description>