diff --git a/parsl/tests/configs/htex_local.py b/parsl/tests/configs/htex_local.py
index 5a65ab07ca..712570b628 100644
--- a/parsl/tests/configs/htex_local.py
+++ b/parsl/tests/configs/htex_local.py
@@ -9,7 +9,7 @@ def fresh_config():
         executors=[
             HighThroughputExecutor(
                 label="htex_local",
-                loopback_address="127.0.0.1",
+                loopback_address="::1",
                 worker_debug=True,
                 cores_per_worker=1,
                 encrypted=True,