diff --git a/requirements.txt b/requirements.txt
index 03e07285..b64bb6d7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ wheel==0.37.0
 
 # Tests & Linting
 autoflake==1.4
-black==20.8b1
+black==21.9b0
 coverage==6.0.2
 cryptography==3.4.8
 flake8==3.9.2