diff --git a/assignment1/requirements.txt b/assignment1/requirements.txt
old mode 100755
new mode 100644
index e06a766..a83b2b0
--- a/assignment1/requirements.txt
+++ b/assignment1/requirements.txt
@@ -26,7 +26,7 @@ mistune==0.7.1
 nbconvert==4.1.0
 nbformat==4.0.1
 notebook==4.0.6
-numpy==1.10.4
+numpy==1.21.0
 path.py==8.1.2
 pexpect==4.0.1
 pickleshare==0.5