diff --git a/corpusparser/main.py b/corpusparser/main.py
index 89b17b9..3e7c11a 100644
--- a/corpusparser/main.py
+++ b/corpusparser/main.py
@@ -70,7 +70,8 @@ def data_to_valdb(sentence_generator, dbaddr, username, password, collection_nam
     col = valdb[collection_name]
     for s in sentence_generator:
         sdata = s[1]
-        col.insert_one(sdata)
+        # col.insert_one(sdata)
+        col.update({"sid": sdata["sid"]}, sdata, upsert=True)
 
 
 if __name__ == "__main__":