diff --git a/pyproject.toml b/pyproject.toml
index f17367c1f..8df68c982 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,7 +39,7 @@ dependencies = [
 [project.optional-dependencies]
 tests = [
     "pytest==8.0.0",
-    "pytest-cov==4.1.0",
+    "pytest-cov==5.0.0",
     "matplotlib>=3.5.3",
 ]
 doc = [