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-rw-r--r--src/event_to_string.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/event_to_string.cpp b/src/event_to_string.cpp
index 499966a..8212b9d 100644
--- a/src/event_to_string.cpp
+++ b/src/event_to_string.cpp
@@ -18,6 +18,7 @@ PATCHAGE_DISABLE_FMT_WARNINGS
PATCHAGE_RESTORE_WARNINGS
#include <optional>
+#include <ostream>
#include <string>
#include <variant>