diff --git a/tests/requirements.txt b/tests/requirements.txt
index 0fa34ef..7956f69 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -2,7 +2,7 @@ asn1crypto==0.24.0
 atomicwrites==1.2.1
 attrdict==2.0.0
 attrs==18.2.0
-certifi==2018.10.15
+certifi==2022.12.7
 cffi==1.11.5
 chardet==3.0.4
 cryptography==2.4.2