diff --git a/tests/cli-tests/run.py b/tests/cli-tests/run.py
index 45af5124b..a2e1c1f86 100755
--- a/tests/cli-tests/run.py
+++ b/tests/cli-tests/run.py
@@ -535,7 +535,8 @@ class TestSuite:
             subprocess.run(
                 args=[script],
                 stdin=subprocess.DEVNULL,
-                capture_output=True,
+                stdout=subprocess.PIPE,
+                stderr=subprocess.PIPE,
                 cwd=cwd,
                 env=env,
                 check=True,