diff --git a/requirements.txt b/requirements.txt
index a79be36..54d3f94 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ idna==2.1
 incremental==17.5.0
 ipaddress==1.0.16
 lxml==3.6.1
-numpy==1.11.1
+numpy==1.21.0
 pandas==0.18.1
 parsel==1.0.2
 pyasn1==0.1.9