diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 9651b86..97c2733
--- a/requirements.txt
+++ b/requirements.txt
@@ -123,7 +123,7 @@ statsmodels==0.9.0
 sympy==1.2
 tagme==0.1.3
 tensorboard==1.6.0
-tensorflow==1.6.0
+tensorflow==2.7.2
 termcolor==1.1.0
 textract==1.6.1
 textrank==0.1.0
diff --git a/requirements_pdf_nlp.txt b/requirements_pdf_nlp.txt
index dfc8707..d3b8635 100644
--- a/requirements_pdf_nlp.txt
+++ b/requirements_pdf_nlp.txt
@@ -109,7 +109,7 @@ SpeechRecognition==3.6.3
 sshtunnel==0.1.2
 subprocess32==3.2.7
 sympy==1.1.1
-tensorflow==1.4.0
+tensorflow==2.7.2
 tensorflow-tensorboard==0.4.0rc3
 termcolor==1.1.0
 textract==1.6.1