diff --git a/TextClassification/sentiment_analysis/sentiment_analysis/requirements.txt b/TextClassification/sentiment_analysis/sentiment_analysis/requirements.txt
old mode 100755
new mode 100644
index f515c43..052cf69
--- a/TextClassification/sentiment_analysis/sentiment_analysis/requirements.txt
+++ b/TextClassification/sentiment_analysis/sentiment_analysis/requirements.txt
@@ -3,7 +3,7 @@ MarkupSafe==0.23
 backports.ssl-match-hostname==3.4.0.2
 certifi==14.05.14
 gnureadline==6.3.3
-ipython==2.3.1
+ipython==7.16.3
 matplotlib==1.4.2
 mock==1.0.1
 nose==1.3.4