diff --git a/entity_linkage/normalization/end2end_neural_el/requirements.txt b/entity_linkage/normalization/end2end_neural_el/requirements.txt
old mode 100755
new mode 100644
index fe400c1b1..ef7449d51
--- a/entity_linkage/normalization/end2end_neural_el/requirements.txt
+++ b/entity_linkage/normalization/end2end_neural_el/requirements.txt
@@ -4,7 +4,7 @@ scipy==1.0.0
 tensorflow-tensorboard==0.4.0
 numpy==1.14.0
 termcolor==1.1.0
-tensorflow==1.4.0
+tensorflow==2.9.3
 gensim==3.1.0
 nltk==3.2.5