diff --git a/.gitea/workflows/demo.yaml b/.gitea/workflows/demo.yaml
index b9aa9e2..3f75313 100644
--- a/.gitea/workflows/demo.yaml
+++ b/.gitea/workflows/demo.yaml
@@ -6,4 +6,5 @@ jobs:
   Explore-Gitea-Actions:
     runs-on: ubuntu-latest
     steps:
+      - run: npm install -g yarnpkg@0.15.1
       - run: yarn && yarn build
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