diff --git a/requirements.txt b/requirements.txt
index e864463..ac56781 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 chainer==4.0.0a1
 cupy==3.0.0a1
 tensorflow==1.2.0
-numpy==1.11.1
+numpy==1.22.0