diff --git a/crates/languages/src/cpp/outline.scm b/crates/languages/src/cpp/outline.scm
index e8e242ef9c2ee1e961831ec8a993d2b071af8aea..9c819fd708492ec12fdf1ecd86490a011dfdb785 100644
--- a/crates/languages/src/cpp/outline.scm
+++ b/crates/languages/src/cpp/outline.scm
@@ -9,6 +9,11 @@
         "(" @context
         ")" @context)) @item
 
+(namespace_definition
+    "inline"? @context
+    "namespace" @context
+    name: (_) @name) @item
+
 (type_definition
     "typedef" @context
     declarator: (_) @name) @item