diff --git a/corpusparser/main.py b/corpusparser/main.py
index 3e7c11a..05a2577 100644
--- a/corpusparser/main.py
+++ b/corpusparser/main.py
@@ -63,7 +63,7 @@ def data_to_valdb(sentence_generator, dbaddr, username, password, collection_nam
         username=username,
         password=password,
         authSource="valdb",
-        authMechanism='SCRAM-SHA-256'
+        authMechanism='SCRAM-SHA-1'
     )
     valdb = client.valdb
     logger.info("Writing data to {}.".format(collection_name))