1 files changed, 2 insertions, 0 deletions
diff --git a/derive.cc b/derive.cc
index abec5f32..3b82ddd5 100644
--- a/derive.cc
+++ b/derive.cc
@@ -3,6 +3,8 @@
 #include "error.h"
 #include "mask.h"
 
+#include <memory>
+
 namespace ledger {
 
 entry_t * derive_new_entry(journal_t& journal,