diff --git a/requirements.txt b/requirements.txt
index 0405537..61c01be 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-certifi==2020.4.5.1
+certifi==2021.5.30
 future==0.18.2
 python-dateutil==2.8.1
 python-telegram-bot==11.1.0