diff --git a/OnDemandUpdatePTU.pro b/OnDemandUpdatePTU.pro
index 0716052..4ae0329 100644
--- a/OnDemandUpdatePTU.pro
+++ b/OnDemandUpdatePTU.pro
@@ -249,6 +249,7 @@ HEADERS += \
         process/command.h \
         message_handler.h \
         worker.h \
+        interfaces.h \
         commandline_parser.h \
         plugins/interfaces.h