diff --git a/.clang-format b/.clang-format
index 42a2307..27f96ff 100644
--- a/.clang-format
+++ b/.clang-format
@@ -82,6 +82,7 @@
 PointerAlignment: Right
 ReflowComments:  true
 SortIncludes:    true
+SortUsingDeclarations: true
 SpaceAfterCStyleCast: false
 SpaceBeforeAssignmentOperators: true
 SpaceBeforeParens: ControlStatements