diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4d4008e..dee1207 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog: @go/convert
 
+## [v1.0.5] - 2026-05-04
+
+### Fixed
+- **兼容性修复**：修复了由于 `cast` 库 API 变更导致的 `MustJSONBytes` 未定义错误，更新为 `MustToJSONBytes`。
+
 ## [v1.0.4] - 2026-04-30
 
 ### Changed
diff --git a/convert.go b/convert.go
index 9e0e9ba..1e397b4 100644
--- a/convert.go
+++ b/convert.go
@@ -66,7 +66,7 @@ func performConversion(source, destination any) *reflect.Value {
 	if realDestination.CanAddr() {
 		address := realDestination.Addr().Interface()
 		if unmarshaler, isJSONUnmarshaler := address.(json.Unmarshaler); isJSONUnmarshaler {
-			_ = unmarshaler.UnmarshalJSON(cast.MustJSONBytes(realSource.Interface()))
+			_ = unmarshaler.UnmarshalJSON(cast.MustToJSONBytes(realSource.Interface()))
 			return nil
 		}
 		if unmarshaler, isYAMLUnmarshaler := address.(yaml.Unmarshaler); isYAMLUnmarshaler {
@@ -109,7 +109,7 @@ func performConversion(source, destination any) *reflect.Value {
 
 	case reflect.Slice:
 		if destinationType.Elem().Kind() == reflect.Uint8 {
-			applyValue(realDestination, reflect.ValueOf(cast.MustJSONBytes(realSource.Interface())), &allocatedValue)
+			applyValue(realDestination, reflect.ValueOf(cast.MustToJSONBytes(realSource.Interface())), &allocatedValue)
 		} else {
 			normalizedSource := realSource
 			if sourceType.Kind() == reflect.String {