diff --git a/bioio_tifffile/reader_metadata.py b/bioio_tifffile/reader_metadata.py
index e74ac4d..59d51ae 100644
--- a/bioio_tifffile/reader_metadata.py
+++ b/bioio_tifffile/reader_metadata.py
@@ -21,7 +21,7 @@ def get_supported_extensions() -> List[str]:
         """
         Return a list of file extensions this plugin supports reading.
         """
-        return ["tif", "tiff"]
+        return ["tif", "tiff", "lsm"]
 
     @staticmethod
     def get_reader() -> bioio_base.reader.Reader: