diff --git a/prepro/requirements.txt b/prepro/requirements.txt
old mode 100755
new mode 100644
index adc1d46..20fc8f6
--- a/prepro/requirements.txt
+++ b/prepro/requirements.txt
@@ -9,7 +9,7 @@ botocore==1.12.37
 Brlapi==0.6.6
 bs4==0.0.1
 bz2file==0.98
-certifi==2018.10.15
+certifi==2022.12.7
 chardet==3.0.4
 command-not-found==0.3
 cryptography==2.1.4