diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 2b9379d..6777188
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ kiwisolver==1.0.1
 matplotlib==3.0.1
 mkl-fft==1.0.6
 mkl-random==1.0.1
-numpy==1.15.4
+numpy==1.22.0
 pandas==0.23.4
 Pint==0.8.1
 pyparsing==2.3.0