diff --git a/requirements.txt b/requirements.txt
index eafaa91..f3ff0fc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ lxml==3.6.4
 mysqlclient==1.3.7
 networkx==1.11
 nltk==3.2.1
-numpy==1.11.1
+numpy==1.21.0
 PyMySQL==0.7.9
 pyparsing==2.1.9
 python-dateutil==2.5.3