--- a/test/utils.py
+++ b/test/utils.py
@@ -736,7 +736,7 @@
     def psql_debug(self, **kwargs):
         conninfo = self.make_conninfo(**kwargs)
         run(
-            ["psql", conninfo],
+            ["psql", "-X", conninfo],
             silent=True,
         )
 
