fix snyk issue

chensuyue · chensuyue · commit 0dc79ef290ad · 2021-04-28T16:43:18.000+08:00
diff --git a/examples/pytorch/language_translation/examples/summarization/requirements.txt b/examples/pytorch/language_translation/examples/summarization/requirements.txt
@@ -5,5 +5,5 @@ boto3
 # Used for downloading models over HTTP
 requests
 # For ROUGE
-nltk
+nltk>=3.6
 py-rouge
