diff --git a/pyproject.toml b/pyproject.toml
index 9200f77..378afd9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ dependencies = [
 
 
 [project.optional-dependencies]
-tests = ["pytest==8.3.3", "pytest-cov==5.0.0", "pyfakefs==5.7.1"]
+tests = ["pytest==8.3.3", "pytest-cov==6.0.0", "pyfakefs==5.7.1"]
 
 doc = [
     "Sphinx==8.1.3",