diff --git a/Lectures/Lecture5/requirements.txt b/Lectures/Lecture5/requirements.txt
old mode 100755
new mode 100644
index 9da1925..b5b4825
--- a/Lectures/Lecture5/requirements.txt
+++ b/Lectures/Lecture5/requirements.txt
@@ -1,4 +1,4 @@
-numpy==1.15.1
+numpy==1.22.0
 matplotlib==2.2.3
 pandas==0.23.4
 sklearn==0.0