diff --git a/include/loot/plugin_interface.h b/include/loot/plugin_interface.h
index 2211b970..471dbef4 100644
--- a/include/loot/plugin_interface.h
+++ b/include/loot/plugin_interface.h
@@ -25,6 +25,7 @@
 #define LOOT_PLUGIN_INTERFACE
 
 #include <cstdint>
+#include <set>
 #include <string>
 #include <vector>