diff --git a/_UPDATE/TwitterTweetSentimentalAnalysis/requirements.txt b/_UPDATE/TwitterTweetSentimentalAnalysis/requirements.txt
index f6b3c01..d46ab62 100644
--- a/_UPDATE/TwitterTweetSentimentalAnalysis/requirements.txt
+++ b/_UPDATE/TwitterTweetSentimentalAnalysis/requirements.txt
@@ -1,3 +1,3 @@
-nltk==3.2.4
+nltk==3.6.6
 tweepy==3.10.0
 textblob==0.15.3
\ No newline at end of file