diff --git a/requirements_dev.txt b/requirements_dev.txt
index ccfff5a..8056a38 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -2,5 +2,5 @@
 #    uv pip compile -o requirements_dev.txt --group dev --no-deps
 pytest==8.3.3
     # via nxmx (pyproject.toml:dev)
-pytest-cov==5.0.0
+pytest-cov==6.3.0
     # via nxmx (pyproject.toml:dev)