diff --git a/requirements.txt b/requirements.txt
index 2a57acb..96d07de 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ ipython==2.3.0
 itsdangerous==0.24
 Jinja2==2.7.3
 MarkupSafe==0.23
-numpy==1.12.0
+numpy==1.21.0
 oauthlib==2.0.1
 packaging==16.8
 pi-rc522==1.1.0