From 40f74815f0c982eb4f342b3e1107358c0d9d5db3 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Tue, 25 Aug 2026 23:03:11 -0500
Subject: [PATCH] Widen the identity-unknown guard to UnicodeError in the
 generic prepare_pch

---
 esphome/build_helpers/pch.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/esphome/build_helpers/pch.py b/esphome/build_helpers/pch.py
index f9138a3a9b..4e74333f19 100644
--- a/esphome/build_helpers/pch.py
+++ b/esphome/build_helpers/pch.py
@@ -317,7 +317,7 @@ def prepare_pch(
                 cmd_id,
             ),
         )
-    except OSError as err:
+    except (OSError, UnicodeError) as err:
         # Identity unknown: a stale cache entry must never be served
         _LOGGER.warning(
             "Could not establish the pch identity; compiling without it: %s", err