diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index f528eec..3ffa665
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 absl-py==0.8.1
 astor==0.8.0
 cachetools==3.1.1
-certifi==2019.9.11
+certifi==2022.12.7
 chardet==3.0.4
 cycler==0.10.0
 gast==0.2.2