diff --git a/iodata/formats/json_qcschema.py b/iodata/formats/json_qcschema.py
index 041c7a25..e70f7904 100644
--- a/iodata/formats/json_qcschema.py
+++ b/iodata/formats/json_qcschema.py
@@ -576,7 +576,9 @@
 __all__ = ()
 
 
-PATTERNS = []
+PATTERNS = [
+    "*.json",
+]
 
 
 @document_load_one(