diff --git a/contracts/ontology/requirements.txt b/contracts/ontology/requirements.txt
index 64be074..4b9b36d 100644
--- a/contracts/ontology/requirements.txt
+++ b/contracts/ontology/requirements.txt
@@ -7,7 +7,7 @@ async-timeout==3.0.1
 attrs==19.1.0
 base58==1.0.3
 Brlapi==0.6.6
-certifi==2019.3.9
+certifi==2022.12.7
 cffi==1.12.3
 chardet==3.0.4
 Click==7.0