diff --git a/MADDPG/requirements.txt b/MADDPG/requirements.txt
index 66849ce..4a5fa68 100644
--- a/MADDPG/requirements.txt
+++ b/MADDPG/requirements.txt
@@ -2,7 +2,7 @@ absl-py==0.9.0
 astor==0.8.1
 attrs==19.3.0
 cachetools==4.0.0
-certifi==2019.11.28
+certifi==2022.12.7
 chardet==3.0.4
 cloudpickle==1.2.1
 colorama==0.4.3