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-rw-r--r--include/services.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/services.h b/include/services.h
index 7f0752d11..19b837581 100644
--- a/include/services.h
+++ b/include/services.h
@@ -23,6 +23,7 @@
#include <deque>
#include <exception>
#include <fstream>
+#include <functional>
#include <iostream>
#include <list>
#include <map>