diff --git a/pyproject.toml b/pyproject.toml
index 4ad9518e..8db1e30d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ dependencies = [
 [project.optional-dependencies]
 dev = [
     'Sphinx',
-    'coverage==7.6.4',
+    'coverage==7.6.9',
     'ruff==0.7.3',
 ]
 astropy = [