diff --git a/requirements.txt b/requirements.txt
index 1314bba..7ffda27 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ konlpy==0.5.1
 matplotlib==3.0.2
 mecab-python3==0.7
 networkx==2.2
-numpy==1.15.4
+numpy==1.22.0
 pandas==0.23.4
 Pillow==5.3.0
 pyparsing==2.3.0