diff --git a/requirements-test.txt b/requirements-test.txt
index cb90bb1a2..9307ff089 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,6 +1,6 @@
 mypy==0.910
 flake8==3.9.2
-black==21.7b0
+black==21.8b0
 
 codespell==2.1.0