diff --git a/setup.py b/setup.py
index d10e57f..31635ea 100644
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,7 @@
 ]
 
 extras_require = {
-    "test": ["pytest~=8.0", "pytest-cov~=5.0"],
+    "test": ["pytest~=8.0", "pytest-cov>=5,<7"],
     "hook": ["pre-commit~=3.0"],
     "lint": ["ruff~=0.2"],
     "docs": ["mkdocs-material~=9.0", "mkdocstrings[python]~=0.18", "mike~=2.0"],