diff --git a/include/infra/chrono.h b/include/infra/chrono.h
index f53f5ade..f2e0723e 100644
--- a/include/infra/chrono.h
+++ b/include/infra/chrono.h
@@ -24,6 +24,7 @@ namespace inf::chrono {
 
 #ifdef HAVE_CPP20_CHRONO
 using days       = std::chrono::days;
+using year       = std::chrono::year;
 using date_point = std::chrono::time_point<std::chrono::system_clock, days>;
 using time_point = std::chrono::time_point<std::chrono::system_clock, std::chrono::milliseconds>;
 
@@ -31,6 +32,7 @@ using local_date_point = std::chrono::local_days;
 using local_time_point = std::chrono::local_time<std::chrono::milliseconds>;
 #else
 using days       = date::days;
+using year       = date::year;
 using date_point = std::chrono::time_point<std::chrono::system_clock, days>;
 using time_point = std::chrono::time_point<std::chrono::system_clock, std::chrono::milliseconds>;