diff --git a/Third_Party_Open_Source_Software_Notice b/Third_Party_Open_Source_Software_Notice
index bccb1ed2057..21914d41566 100644
--- a/Third_Party_Open_Source_Software_Notice
+++ b/Third_Party_Open_Source_Software_Notice
@@ -7,7 +7,7 @@ THE OPEN SOURCE SOFTWARE IN THIS PRODUCT IS DISTRIBUTED IN THE HOPE THAT IT WILL
 
 Copyright Notice and License Texts 
 
-Software: asttokens 1.1.13
+Software: asttokens 2.0.0
 Copyright notice: 
 copyright = u'2016, Grist Labs'
 Copyright 2016 Grist Labs, Inc.
diff --git a/requirements.txt b/requirements.txt
index 7f64cece36e..3a781b5821f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 numpy >= 1.17.0
 protobuf >= 3.13.0
-asttokens >= 1.1.13
+asttokens >= 2.0.0
 pillow >= 6.2.0
 scipy >= 1.5.2
 matplotlib >= 3.1.3         # for ut test