diff --git a/2021/requirements.txt b/2021/requirements.txt
index dc80a57..ab3cbca 100644
--- a/2021/requirements.txt
+++ b/2021/requirements.txt
@@ -1,6 +1,6 @@
 ipython==7.19.0
 networkx==2.5
-numpy==1.19.4
+numpy==1.22.0
 parse==1.18.0
 regex==2020.11.13
 sortedcontainers==2.3.0