diff --git a/crates/languages/src/cpp/outline.scm b/crates/languages/src/cpp/outline.scm
index 9c819fd708492ec12fdf1ecd86490a011dfdb785..30e0c8da45fd152588da63e7d8e9bd879cb8cccc 100644
--- a/crates/languages/src/cpp/outline.scm
+++ b/crates/languages/src/cpp/outline.scm
@@ -30,6 +30,10 @@
     "enum" @context
     name: (_) @name) @item
 
+(union_specifier
+    "union" @context
+    name: (_) @name) @item
+
 (enumerator
     name: (_) @name) @item