diff --git a/pyproject.toml b/pyproject.toml
index db723e611..ae4a0e581 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -58,8 +58,8 @@ norbert = "^0.2.1"
 [tool.poetry.dev-dependencies]
 pytest = "^6.2.1"
 isort = "^5.7.0"
-black = "^21.7b0"
-mypy = "^0.790"
+black = ">=21.7b0"
+mypy = ">=0.790"
 flake8 = "^5.0.0"
 pytest-forked = "^1.3.0"
 musdb = "^0.4.0"