diff --git a/decision-tree/requirements.txt b/decision-tree/requirements.txt
index 55cf36d..0f79624 100644
--- a/decision-tree/requirements.txt
+++ b/decision-tree/requirements.txt
@@ -1,5 +1,5 @@
 scikit_learn==0.18.1
-numpy==1.11.3
+numpy==1.22.0
 pandas==0.19.2
 pytest==3.0.5
 scipy==0.18.1