diff --git a/.gitea/workflows/main-workflow.yml b/.gitea/workflows/main-workflow.yml
index f1c3413..3a12522 100644
--- a/.gitea/workflows/main-workflow.yml
+++ b/.gitea/workflows/main-workflow.yml
@@ -42,9 +42,10 @@ jobs:
       run: npm test -- --coverage --coverageReporters=lcov
       
     - name: Upload coverage reports
-      uses: https://github.com/actions/upload-artifact@v3
+      uses: https://github.com/actions/upload-artifact@v4
       if: matrix.node-version == '18.x'
       with:
+        github-server-url: https://gitea.p-lao.com
         name: coverage-reports
         path: coverage/
         retention-days: 30
@@ -116,8 +117,9 @@ jobs:
         cd ..
         
     - name: Upload build artifacts
-      uses: https://github.com/actions/upload-artifact@v3
+      uses: https://github.com/actions/upload-artifact@v4
       with:
+        github-server-url: https://gitea.p-lao.com
         name: release-artifacts
         path: |
           drawio-mcp-server-${{ github.sha }}.tar.gz
@@ -151,9 +153,10 @@ jobs:
       continue-on-error: true
       
     - name: Upload lint results
-      uses: https://github.com/actions/upload-artifact@v3
+      uses: https://github.com/actions/upload-artifact@v4
       if: always()
       with:
+        github-server-url: https://gitea.p-lao.com
         name: lint-results
         path: lint-results.json
         retention-days: 7