diff --git a/.gitea/workflows/build_nightly.yaml b/.gitea/workflows/build_nightly.yaml
index 6d3747a..c1aed3c 100644
--- a/.gitea/workflows/build_nightly.yaml
+++ b/.gitea/workflows/build_nightly.yaml
@@ -19,6 +19,10 @@ jobs:
     steps:
     - name: checkout
       uses: actions/checkout@v5
+    - name: install .NET SDK
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: '8.0.x'
     - name: install 7zip
       run: apt-get update && apt-get install -y p7zip-full
     - name: export game