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-rw-r--r--src/util/tokenpipe.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/util/tokenpipe.cpp b/src/util/tokenpipe.cpp
index 79465dd430..4c091cd2e6 100644
--- a/src/util/tokenpipe.cpp
+++ b/src/util/tokenpipe.cpp
@@ -9,6 +9,7 @@
#include <errno.h>
#include <fcntl.h>
+#include <optional>
#include <unistd.h>
TokenPipeEnd TokenPipe::TakeReadEnd()