diff --git a/pyproject.toml b/pyproject.toml
index d4872ec9..4b2f6257 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,7 +51,7 @@ optional = true
 
 [tool.poetry.group.dev.dependencies]
 # test
-pytest-cov = "^4.1.0"
+pytest-cov = ">=4.1,<6.0"
 pytest-datadir = "^1.5.0"
 pytest-recording = "^0.13.1"
 syrupy = "^4.6.0"