diff --git a/instruments/readers/filereader_registry.py b/instruments/readers/filereader_registry.py
index 7853ae9..71e2a24 100644
--- a/instruments/readers/filereader_registry.py
+++ b/instruments/readers/filereader_registry.py
@@ -7,7 +7,7 @@ from instruments.readers.xps_ibw_reader import read_xps_ibw_file_as_dict
 from instruments.readers.g5505_text_reader import read_txt_files_as_dict
 
 
-file_extensions = ['.ibw','.txt','.dat','.h5','.TXT','.csv','.pkl']
+file_extensions = ['.ibw','.txt','.dat','.h5','.TXT','.csv','.pkl','json','yaml']
 
 # Define the instruments directory (modify this as needed or set to None)
 default_instruments_dir = None  # or provide an absolute path