diff --git a/sdk-webview/src/main/java/com/xuqm/sdk/webview/XWebViewView.kt b/sdk-webview/src/main/java/com/xuqm/sdk/webview/XWebViewView.kt
index e63d677..64c65e8 100644
--- a/sdk-webview/src/main/java/com/xuqm/sdk/webview/XWebViewView.kt
+++ b/sdk-webview/src/main/java/com/xuqm/sdk/webview/XWebViewView.kt
@@ -294,7 +294,7 @@ internal fun copyUriToWebViewCache(context: Context, uri: Uri, mimeType: String?
             ?: mimeType?.let { MimeTypeMap.getSingleton().getExtensionFromMimeType(it) }
             ?: "bin"
         val base = displayName?.substringBeforeLast('.')
-            ?.replace(Regex("[^a-zA-Z0-9_\\-]"), "_")
+            ?.replace(Regex("[^\\p{L}\\p{N}_\\-]"), "_")
             ?.take(64)
             ?: "upload"