diff --git a/pyproject.toml b/pyproject.toml
index d67ec4c..ffd6c86 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,7 +44,7 @@ dependencies = [
 dev = [
     "pre-commit~=3.8.0",
     "pytest~=8.3.3",
-    "pytest-cov~=5.0.0",
+    "pytest-cov>=5.0,<6.3",
     "python-dotenv~=1.0.1",
     "pytest-asyncio~=0.24.0",
 ]