diff --git a/pyproject.toml b/pyproject.toml
index 911f240..ccd90fd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,7 +39,7 @@ Changelog = 'https://github.com/Kozea/Pyphen/releases'
 Donation = 'https://opencollective.com/courtbouillon'
 
 [project.optional-dependencies]
-test = ['pytest', 'pytest-cov', 'pytest-flake8', 'pytest-isort', 'coverage[toml]']
+test = ['pytest', 'pytest-cov', 'pytest-flake8', 'pytest-isort']
 
 [tool.flit.sdist]
 exclude = ['.*']