From f7a6c7a6e5a111aa81007f19bf9c66e232e431e1 Mon Sep 17 00:00:00 2001
From: David Metcalfe <80915+DavidMetcalfe@users.noreply.github.com>
Date: Sat, 27 Jun 2026 17:51:27 -0700
Subject: [PATCH] fix(computer_use): add explicit encoding to /proc/version
 open()

---
 tools/computer_use/cua_backend.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/computer_use/cua_backend.py b/tools/computer_use/cua_backend.py
index cbc4a17de4c2..6d2f6b5c6ff5 100644
--- a/tools/computer_use/cua_backend.py
+++ b/tools/computer_use/cua_backend.py
@@ -199,7 +199,7 @@ def _cua_no_overlay() -> bool:
     if not os.environ.get("DISPLAY"):
         return True
     try:
-        with open("/proc/version") as f:
+        with open("/proc/version", encoding="utf-8") as f:
             if "microsoft" in f.read().lower():
                 return True
     except Exception: