diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 79057d2..e238864 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -1,6 +1,6 @@
 
 
-find_package(Boost 1.62 REQUIRED)
+find_package(Boost 1.62 COMPONENTS date_time REQUIRED)
 find_package(SQLite3 REQUIRED)
 
 #set(CORE_HEADERS
@@ -13,8 +13,9 @@ set(CORE_SOURCES
     entity.cpp
     seller.cpp
     article.cpp
+    sale.cpp
 )
 
 add_library(core STATIC ${CORE_SOURCES})
-target_link_libraries(core Boost::boost)
+target_link_libraries(core Boost::boost Boost::date_time)
 target_link_libraries(core sqlite3)
\ No newline at end of file