diff --git a/requirements.dev.txt b/requirements.dev.txt
index e0b9cf7af..be3f8fa31 100644
--- a/requirements.dev.txt
+++ b/requirements.dev.txt
@@ -6,4 +6,4 @@ coverage
 flake8
 doctest-ignore-unicode==0.1.2
 berkeleydb
-black==21.6b0
+black==21.7b0
diff --git a/setup.py b/setup.py
index 7c9e7ec3a..a769b2558 100644
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@
     "nose==1.3.7",
     "nose-timer",
     "coverage",
-    "black==21.6b0",
+    "black==21.7b0",
     "flake8",
     "doctest-ignore-unicode==0.1.2",
 ]