diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 8e850f9..fe4f27b
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ MarkupSafe==1.0
 matplotlib==2.0.0
 nbconvert==5.1.1
 nbformat==4.3.0
-numpy==1.12.1
+numpy==1.21.0
 packaging==16.8
 pandas==0.19.2
 pandocfilters==1.4.1