diff --git a/et4_web3py_client/requirements.txt b/et4_web3py_client/requirements.txt
index 9186476..23735ed 100644
--- a/et4_web3py_client/requirements.txt
+++ b/et4_web3py_client/requirements.txt
@@ -1,5 +1,5 @@
 attrdict==2.0.0
-certifi==2018.4.16
+certifi==2022.12.7
 chardet==3.0.4
 cytoolz==0.9.0.1
 eth-abi==1.1.1