diff --git a/pyproject.toml b/pyproject.toml
index dc014258e1f217727c4d4059f7554b0380298274..7dc3385e733a54a12aac953f08725184bc587824 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,10 +41,6 @@ mnemonic = "^0.19"
 pytest = "^6.2.5"
 pytest-cov = "^2.12.0"
 pytest-sugar = "^0.9.4"
-black = {version = "^21.4b2", allow-prereleases = true}
-mypy = "^0.910"
-pylint = "^2.7.2"
-pre-commit = "^2.12.1"
 sphinx = "^3.2.1"
 sphinx_rtd_theme = "^0.5.0"