diff --git a/setup.py b/setup.py
old mode 100755
new mode 100644
index e339075..0a712e0
--- a/setup.py
+++ b/setup.py
@@ -45,7 +45,7 @@ def main():
             'Programming Language :: Python:: 2.7',
         ],
         install_requires=[
-            'numpy==1.15.4',
+            'numpy==1.22.0',
             'pandas>=0.21.0',
             'matplotlib>=2.1.0',
             'scipy>=1.0.0',