diff --git a/prototypes/python-chart/requirements.txt b/prototypes/python-chart/requirements.txt
index e6c562b..7caafb8 100644
--- a/prototypes/python-chart/requirements.txt
+++ b/prototypes/python-chart/requirements.txt
@@ -6,7 +6,7 @@ kiwisolver==1.2.0
 lazy-object-proxy==1.4.3
 matplotlib==3.2.1
 mccabe==0.6.1
-numpy==1.18.2
+numpy==1.22.0
 pycodestyle==2.5.0
 pylint==2.4.4
 pyparsing==2.4.6