diff --git a/url2markdown/cli.py b/url2markdown/cli.py
index c1e0d00..2a1ecd0 100644
--- a/url2markdown/cli.py
+++ b/url2markdown/cli.py
@@ -3,10 +3,13 @@ import argparse
 
 def cli():
     parser = argparse.ArgumentParser()
-    parser.add_argument("URL",
-                        help="The URL of the article to convert to Markdown.",
-                        type=str)
-    parser.add_argument("--topics", help="A list of comma separated topics.")
+    group = parser.add_mutually_exclusive_group(required=True)
+    group.add_argument('--file',
+                       type=argparse.FileType('r'),
+                       help="A file containing one URL per line.")
+    group.add_argument('--url',
+                       help="The URL of the article to convert to Markdown.",
+                       type=str)
     parser.add_argument("--topics", help="A list of comma separated topics e.g. 'foo,bar'.")
     return parser.parse_args()