diff --git a/library/library.pro b/library/library.pro
index dcea08e..37edc3f 100644
--- a/library/library.pro
+++ b/library/library.pro
@@ -65,7 +65,8 @@ HEADERS += \
     include/mobilisis/tariff_period_year.h \
     include/mobilisis/tariff_payment_rate.h \
     include/mobilisis/tariff_log.h \
-    include/mobilisis/calculate_price.h
+    include/mobilisis/calculate_price.h \
+    include/mobilisis/atb_project.h
 
 OTHER_FILES += src/main.cpp