diff --git a/requirements.txt b/requirements.txt
index 76c02c7..acab61b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ Keras==2.0.8
 Markdown==2.6.9
 MarkupSafe==1.0
 mecab-python3==0.7
-numpy==1.13.1
+numpy==1.22.0
 protobuf==3.4.0
 pyahocorasick==1.1.4
 pyparsing==2.2.0