diff --git a/paper_requirements.txt b/paper_requirements.txt
old mode 100755
new mode 100644
index 58b19ffc..20db6d7b
--- a/paper_requirements.txt
+++ b/paper_requirements.txt
@@ -1,4 +1,4 @@
-numpy == 1.17.0
+numpy == 1.21.0
 
 matplotlib == 3.2.2