diff --git a/requirements.txt b/requirements.txt
index 0989143..d09ef81 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 arrow==0.15.5
 beautifulsoup4==4.8.2
 bibtexparser==1.1.0
-certifi==2019.11.28
+certifi==2022.12.7
 cffi==1.14.0
 chardet==3.0.4
 cryptography==3.3.2