diff --git a/Ch3/ch3-requirements.txt b/Ch3/ch3-requirements.txt
index c7fa353..cf01dc5 100644
--- a/Ch3/ch3-requirements.txt
+++ b/Ch3/ch3-requirements.txt
@@ -6,6 +6,6 @@ psutil==5.4.8
 gensim==3.6.0
 spacy==2.2.4
 requests==2.23.0
-nltk==3.2.5
+nltk==3.6.3
 matplotlib==3.2.2
 tensorflow==1.14.0
\ No newline at end of file