diff --git a/pyproject.toml b/pyproject.toml
index 6d0af9f..4337a3d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ lsp = ["pygls"]
 
 [tool.poetry.dev-dependencies]
 pytest = "^8.0"
-pytest-cov = "^4.0"
+pytest-cov = "^5.0"
 pytest-console-scripts = "^1.4"
 sphinx = "^7.2.6"
 sphinx-rtd-theme = "^2.0.0"