diff --git a/main.py b/main.py
index f07735d..d2d4359 100644
--- a/main.py
+++ b/main.py
@@ -542,7 +542,7 @@ async def main(
         comma_separated_list = ','.join(l)
 
         with open(os.environ['GITHUB_OUTPUT'], 'a') as f:
-            f.write(f'{name}={comma_separated_list}')
+            f.write(f'{name}={comma_separated_list}\n')
 
 
 if __name__ == '__main__':
diff --git a/main_tests.py b/main_tests.py
index ac7c0f0..da364df 100644
--- a/main_tests.py
+++ b/main_tests.py
@@ -590,7 +590,7 @@ async def test_outputs_are_set(mocker):
         }
     )
     with open(os.environ['GITHUB_OUTPUT']) as f:
-        out_vars = f.readlines()[0]
+        out_vars = f.read()
 
     for i in [
         'needs-github-assistance=',