diff --git a/pyproject.toml b/pyproject.toml
index 5be0668..5b29f49 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -55,11 +55,8 @@ typing-extensions = ">= 4, < 5"
 xlrd = ">= 1.2, < 2"
 
 [tool.poetry.group.dev.dependencies]
-black = "*"
-blackdoc = "*"
 coverage = "!= 6.3"
 coveralls = "*"
-flynt = "*"
 invoke = "*"
 jupyter = "*"
 pre-commit = ">= 3.5"
@@ -67,7 +64,6 @@ pyright = "*"
 pytest = "*"
 pytest-cov = "*"
 pytest-xdist = "*"
-ruff = "*"
 toml = "*"
 twine = "*"