diff --git a/rl_unplugged/requirements.txt b/rl_unplugged/requirements.txt
index cfe9965..7ab1274 100644
--- a/rl_unplugged/requirements.txt
+++ b/rl_unplugged/requirements.txt
@@ -2,7 +2,7 @@ absl-py==0.9.0
 astunparse==1.6.3
 atari-py==0.2.6
 cachetools==4.1.1
-certifi==2020.6.20
+certifi==2023.7.22
 chardet==3.0.4
 cloudpickle==1.3.0
 decorator==4.4.2