diff --git a/tableauserverclient/server/endpoint/datasources_endpoint.py b/tableauserverclient/server/endpoint/datasources_endpoint.py
index 27c5981a1..882001f18 100644
--- a/tableauserverclient/server/endpoint/datasources_endpoint.py
+++ b/tableauserverclient/server/endpoint/datasources_endpoint.py
@@ -14,7 +14,7 @@
 # The maximum size of a file that can be published in a single request is 64MB
 FILESIZE_LIMIT = 1024 * 1024 * 64   # 64MB
 
-ALLOWED_FILE_EXTENSIONS = ['tds', 'tdsx', 'tde']
+ALLOWED_FILE_EXTENSIONS = ['tds', 'tdsx', 'tde', 'hyper']
 
 logger = logging.getLogger('tableau.endpoint.datasources')