diff --git a/.github/workflows/dotnet-core-master.yml b/.github/workflows/dotnet-core-master.yml
index c3a477c..e756709 100644
--- a/.github/workflows/dotnet-core-master.yml
+++ b/.github/workflows/dotnet-core-master.yml
@@ -25,7 +25,7 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
     - name: Install dependencies
       run: dotnet restore
     - name: Build
diff --git a/.github/workflows/dotnet-core-pr.yml b/.github/workflows/dotnet-core-pr.yml
index cfa723f..5e73b05 100644
--- a/.github/workflows/dotnet-core-pr.yml
+++ b/.github/workflows/dotnet-core-pr.yml
@@ -25,7 +25,7 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
     - name: Install dependencies
       run: dotnet restore
     - name: Build
diff --git a/.github/workflows/dotnet-core.yml b/.github/workflows/dotnet-core.yml
index bd7f597..eaa1d44 100644
--- a/.github/workflows/dotnet-core.yml
+++ b/.github/workflows/dotnet-core.yml
@@ -26,7 +26,7 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
     - name: Install dependencies
       run: dotnet restore
     - name: Get the version
diff --git a/DBMigrator/DBMigrator.csproj b/DBMigrator/DBMigrator.csproj
index 79d8311..558b105 100644
--- a/DBMigrator/DBMigrator.csproj
+++ b/DBMigrator/DBMigrator.csproj
@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/Microting.eFormRentableItemBase.Unit.Tests/Microting.eFormRentableItemBase.Unit.Tests.csproj b/Microting.eFormRentableItemBase.Unit.Tests/Microting.eFormRentableItemBase.Unit.Tests.csproj
index 4c7a6d5..2211d86 100644
--- a/Microting.eFormRentableItemBase.Unit.Tests/Microting.eFormRentableItemBase.Unit.Tests.csproj
+++ b/Microting.eFormRentableItemBase.Unit.Tests/Microting.eFormRentableItemBase.Unit.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/Microting.eFormRentableItemBase/Microting.eFormRentableItemBase.csproj b/Microting.eFormRentableItemBase/Microting.eFormRentableItemBase.csproj
index 58b8de2..fab898c 100644
--- a/Microting.eFormRentableItemBase/Microting.eFormRentableItemBase.csproj
+++ b/Microting.eFormRentableItemBase/Microting.eFormRentableItemBase.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
         <PackageIcon>icon.png</PackageIcon>
     </PropertyGroup>