diff --git a/requirements.txt b/requirements.txt
index 0d1a03e..5866900 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ chainer==6.5.0
 chainercv==0.13.1
 cupy==6.5.0
 imgaug==0.3.0
-numpy==1.16.3
+numpy==1.22.0
 opencv-python-headless
 Pillow==6.2.0
 scikit-learn==0.20.2