diff --git a/requirements.txt b/requirements.txt
index 632f1fa..d69dc19 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ cycler==0.10.0            # via matplotlib
 future==0.17.1
 kiwisolver==1.1.0         # via matplotlib
 matplotlib==2.2.4
-numpy==1.17.1             # via matplotlib
+numpy==1.22.0             # via matplotlib
 pyparsing==2.4.2          # via matplotlib
 python-dateutil==2.8.0    # via matplotlib
 pytz==2019.2              # via matplotlib