diff --git a/docs-requirements.txt b/docs-requirements.txt
index 5b5345a..7c053db 100644
--- a/docs-requirements.txt
+++ b/docs-requirements.txt
@@ -12,7 +12,7 @@ certifi==2021.5.30
     # via requests
 cffi==1.14.5
     # via cryptography
-charset-normalizer==2.0.3
+charset-normalizer==2.0.4
     # via requests
 cryptography==2.9.2
     # via -r docs-requirements.in