diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e9b89a8..f02368c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -15,7 +15,7 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
 
     - name: Build with dotnet on windows
       if: matrix.os == 'windows-latest'
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 51bcb85..78a78a0 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -13,7 +13,7 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: 8.0.x
+          dotnet-version: 9.0.x
 
       - name: build package
         run: ./build.sh package