diff --git a/.gitattributes b/.gitattributes
index 3426f1dee..4cc803e80 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1,3 @@
 lib/emscripten/emtests/* linguist-vendored
 lib/spectests/spectests/* linguist-vendored
+CHANGELOG.md merge=union