diff --git a/gateway/run.py b/gateway/run.py
index a82bb50f0760..9496617bf483 100644
--- a/gateway/run.py
+++ b/gateway/run.py
@@ -7777,9 +7777,10 @@ class GatewayRunner(GatewayAuthorizationMixin, GatewayKanbanWatchersMixin, Gatew
             )
             _faulthandler_path = os.path.join(_log_dir, "gateway_faulthandler.log")
             os.makedirs(_log_dir, exist_ok=True)
+            _fh = open(_faulthandler_path, "a", encoding="utf-8")
             faulthandler.register(
                 signal.SIGUSR2,
-                file=open(_faulthandler_path, "a"),
+                file=_fh,
                 all_threads=True,
                 chain=True,
             )