diff --git a/txtlyric_to_lrc/main.py b/txtlyric_to_lrc/main.py
index 091f9ee..f9780d4 100644
--- a/txtlyric_to_lrc/main.py
+++ b/txtlyric_to_lrc/main.py
@@ -14,6 +14,7 @@ song_file_extensions = set([
     "m4a",
     "webm",
     "flac", # stable-ts likely uses ffmpeg to convert this for whisper
+    "opus",
 ])
 
 @click.command()
@@ -73,7 +74,6 @@ def srt_to_lrc(srt_text: str) -> str:
     end_time = subs[-1].end
     lines.append(f"[{timedelta_to_hhmmssss(end_time)}]")
     return "\n".join(lines)    
-    
 
 if __name__ == "__main__":
     main()