diff --git a/test/runner.node.mjs b/test/runner.node.mjs
index e31f93b22e..8aaeeedc07 100755
--- a/test/runner.node.mjs
+++ b/test/runner.node.mjs
@@ -1141,7 +1141,7 @@ function reportOutputToGitHubAction(name, value) {
     return;
   }
   const delimeter = Math.random().toString(36).substring(2, 15);
-  const content = `${name}<<${delimeter}\n${value}\n${delimeter}`;
+  const content = `${name}<<${delimeter}\n${value}\n${delimeter}\n`;
   appendFileSync(outputPath, content);
 }