diff --git a/.forgejo/workflows/demo.yaml b/.forgejo/workflows/demo.yaml
index 6b2b2d5..d576703 100644
--- a/.forgejo/workflows/demo.yaml
+++ b/.forgejo/workflows/demo.yaml
@@ -23,7 +23,7 @@ jobs:
 
       - name: Test set variable
         id: build
-        run: deno eval "Promise.resolve().then(_ => console.log(JSON.stringify(Deno.build, null, '\n'))).then(v => 'BUILD=' + v).then(console.log)"
+        run: deno eval "Promise.resolve().then(_ => JSON.stringify(Deno.build, null, '\n')).then(v => v.replaceAll(/\r?\n/g, '\\\n')).then(v => 'BUILD=' + v).then(console.log)"
 
       - name: Test get variable
         run: echo ${{ steps.build.outputs.BUILD }}