diff --git a/requirements.txt b/requirements.txt
index cc77884..e70f7e2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 altmetric==1.0
-certifi==2019.11.28
+certifi==2022.12.7
 chardet==3.0.4
 dnspython==1.16.0
 docutils==0.16