diff --git a/run b/run
index 444eaee..e01ea26 100755
--- a/run
+++ b/run
@@ -199,7 +199,7 @@ def main(args, extra_args=None):
                         if args.arch == 'aarch64':
                             # https://stackoverflow.com/questions/43682311/uart-communication-in-gem5-with-arm-bare-metal/50983650#50983650
                             cmd.extend(['--param', 'system.highest_el_is_64 = True', common.Newline])
-                            cmd.extend(['--param', 'system.auto_reset_addr_64 = True', common.Newline])
+                            cmd.extend(['--param', 'system.auto_reset_addr = True', common.Newline])
             elif args.gem5_script == 'biglittle':
                 if args.gem5_restore is not None:
                     cpt_dir = common.gem_list_checkpoint_dirs()[-args.gem5_restore]
diff --git a/submodules/gem5 b/submodules/gem5
index d4b3e06..121160d 160000
--- a/submodules/gem5
+++ b/submodules/gem5
@@ -1 +1 @@
-Subproject commit d4b3e064adeeace3c3e7d106801f95c14637c12f
+Subproject commit 121160d97f3d41220a26d3371a277434c3defea3