diff --git a/pyproject.toml b/pyproject.toml
index 682c83fe..2f382738 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ dependencies = [
 [project.optional-dependencies]
 dev = [
     'Sphinx==8.1.3',
-    'coverage==7.6.9',
+    'coverage==7.7.1',
     'ruff==0.9.9',
 ]
 astropy = [