incremental
diff --git a/.clang-format b/.clang-format
index 5f8caed..17d370f 100644
--- a/.clang-format
+++ b/.clang-format
@@ -72,7 +72,7 @@
 PenaltyReturnTypeOnItsOwnLine: 200
 PointerAlignment: Left
 ReflowComments:  true
-SortIncludes:    false
+SortIncludes:    true
 SpaceAfterCStyleCast: false
 SpaceBeforeAssignmentOperators: true
 SpaceBeforeParens: ControlStatements