diff --git a/requirements.txt b/requirements.txt
index f304e5d..b69a61d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ CacheControl==0.12.6
 cachetools==4.2.4
 certifi==2021.10.8
 cffi==1.14.6
-charset-normalizer==2.0.6
+charset-normalizer==2.0.9
 click==8.0.3
 diskcache==5.2.1
 firebase-admin==5.1.0