diff --git a/Ch4/ch4-requirements.txt b/Ch4/ch4-requirements.txt
index ae20396..80642a1 100644
--- a/Ch4/ch4-requirements.txt
+++ b/Ch4/ch4-requirements.txt
@@ -5,7 +5,7 @@ nltk==3.5
 gensim==3.8.3
 wget==3.2
 fasttext==0.9.2
-tensorflow==1.14.0
+tensorflow==2.5.3
 torch==1.9.0
 pytorch_pretrained_bert==0.6.2
 pytorch-nlp==0.5.0