diff --git a/pyproject.toml b/pyproject.toml
index 7f3121b..1354eba 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ dependencies = [
 [project.optional-dependencies]
 dev = [
     "black==25.12.0",
-    "build==1.4.2",
+    "build==1.4.3",
     "mypy==1.19.1",
     "pylint==4.0.4",
     "pytest==9.0.2",