diff --git a/2019/requirements.txt b/2019/requirements.txt
index 5690137..737e4fa 100644
--- a/2019/requirements.txt
+++ b/2019/requirements.txt
@@ -1,6 +1,6 @@
 ipython==7.9.0
 networkx==2.4
-numpy==1.17.4
+numpy==1.22.0
 parse==1.12.1
 regex==2019.11.1
 sortedcontainers==2.1.0