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-rw-r--r--libbbot/manifest.cxx2
1 files changed, 2 insertions, 0 deletions
diff --git a/libbbot/manifest.cxx b/libbbot/manifest.cxx
index 8a2ebaa..d06a035 100644
--- a/libbbot/manifest.cxx
+++ b/libbbot/manifest.cxx
@@ -35,6 +35,8 @@ namespace bbot
using serialization = manifest_serialization;
using name_value = manifest_name_value;
+ using butl::optional;
+
// result_status
//
string