diff --git a/requirements.txt b/requirements.txt
index 870532c..71d9ae6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ chainercv==0.8.0
 cupy==4.0.0b1
 Cython==0.23.4
 matplotlib==1.5.1
-numpy==1.13.3
+numpy==1.22.0
 opencv-python==3.2.0.8
 pandas==0.20.3
 pep8==1.7.0