diff --git a/library/library.pro b/library/library.pro
index 738630f..ec81382 100644
--- a/library/library.pro
+++ b/library/library.pro
@@ -72,7 +72,8 @@ HEADERS += \
     include/mobilisis/tariff_business_hours.h \
     include/mobilisis/tariff_daily_ticket.h \
     include/mobilisis/tariff_customer.h \
-    include/mobilisis/tariff_timebase.h
+    include/mobilisis/tariff_timebase.h \
+    include/mobilisis/tariff_timestep_config.h
 
 OTHER_FILES += src/main.cpp \
     ../tariffs/tariff_korneuburg.json \