diff --git a/requirements.txt b/requirements.txt
index 2708cb8..935d4d5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ autopep8==1.6.0
 base58==2.1.1
 bitarray==1.2.2
 black==21.12b0
-certifi==2021.10.8
+certifi==2022.12.7
 charset-normalizer==2.0.10
 click==8.0.3
 cytoolz==0.11.2