diff --git a/Cargo.toml b/Cargo.toml
index 0e1a178..27a8830 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "agit"
-version = "0.13.0"
+version = "0.13.1"
 edition = "2021"
 description = "AI-native Git tool - pure Rust implementation"
 license = "Apache-2.0"
diff --git a/src/core/repo.rs b/src/core/repo.rs
index e4d1957..b05b439 100644
--- a/src/core/repo.rs
+++ b/src/core/repo.rs
@@ -60,7 +60,7 @@ fn local_tz_offset() -> String {
     //    取当前 UTC 秒数，计算它对应的小时数，再用简易方法估算偏移
     #[cfg(unix)]
     {
-        if let Ok(offset) = unix_tz_offset() {
+        if let Some(offset) = unix_tz_offset() {
             return offset;
         }
     }