diff --git a/superset/config.py b/superset/config.py
index e31a87dfcb..d9ae516b87 100644
--- a/superset/config.py
+++ b/superset/config.py
@@ -370,7 +370,7 @@ SUPERSET_WEBSERVER_DOMAINS = None
 
 # Allowed format types for upload on Database view
 EXCEL_EXTENSIONS = {"xlsx", "xls"}
-CSV_EXTENSIONS = {"csv", "tsv"}
+CSV_EXTENSIONS = {"csv", "tsv", "txt"}
 ALLOWED_EXTENSIONS = {*EXCEL_EXTENSIONS, *CSV_EXTENSIONS}
 
 # CSV Options: key/value pairs that will be passed as argument to DataFrame.to_csv