diff --git a/pyproject.toml b/pyproject.toml
index 8522457..a0ecb51 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,7 +11,7 @@ docker = "^5.0.3"
 pytest = "^7.0.1"
 
 [tool.poetry.dev-dependencies]
-black = "^19.10b0"
+black = "^20.8b1"
 isort = "^5.8.0"
 autoflake = "^1.3.1"
 mypy = "^0.971"