diff --git a/features_cpp29.yaml b/features_cpp29.yaml
index 8966fa4..ee4c1ea 100644
--- a/features_cpp29.yaml
+++ b/features_cpp29.yaml
@@ -94,6 +94,7 @@ features:
   - desc: "The unexpected in `std::expected`"
     paper: P3798
     lib: true
+    support: [Clang 24]
     ftm:
       - name: __cpp_lib_expected
         value: 202606L