diff --git a/requirements.txt b/requirements.txt
index 44791f5..b8ab153 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 bitcoin==1.1.42
 blockchain==1.3.3
-certifi==2017.4.17
+certifi==2022.12.7
 chardet==3.0.4
 configparser==3.5.0
 ethereum-abi-utils==0.4.0