diff --git a/requirements.txt b/requirements.txt
index dafb41a..c61b395 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ bleach==3.3.0
 bs4==0.0.1
 cachetools==3.1.1
 castero==0.8.0
-certifi==2020.6.20
+certifi==2022.12.7
 cffi==1.13.2
 chardet==3.0.4
 CJKwrap==2.2
@@ -169,7 +169,7 @@ bleach==3.3.0
 bs4==0.0.1
 cachetools==3.1.1
 castero==0.8.0
-certifi==2020.6.20
+certifi==2022.12.7
 cffi==1.13.2
 chardet==3.0.4
 CJKwrap==2.2